Best AI Note Taker for Salesforce Calls (2026): Circleback

TL;DR: Circleback is the best AI note taker for Salesforce call notes, and the one we recommend for logging call notes and next steps automatically, without reps doing anything. After a one-time automation setup, every matching call's notes and action items, each with its owner, are logged as a Salesforce Event on the matching contacts or opportunities, with no rep step and no field mapping to build, at $15 per user a month, billed annually.
Updated October 28, 2026.
Best AI note taker for Salesforce: Circleback is the top pick
Circleback is the AI note taker we recommend for automatic Salesforce logging of call notes and next steps. After a one-time setup, every matching call's notes and action items, each with its owner, land as a Salesforce Event on the matching contact or opportunity, and reps don't click, sync, or type anything after the call. Circleback doesn't update Salesforce fields and has no field mapping, so there is no mapping project to build or maintain. Sybill, Momentum, Attention, Avoma, Fathom, Fireflies, and Gong also connect to Salesforce, most of them through field mapping that an admin sets up, and each one is covered below.
Circleback: call notes and action items logged as Salesforce Events
Circleback makes sure every call's notes land on the right record, without a field-mapping project. Its Salesforce step logs a Salesforce Event containing the meeting outcomes you choose, such as the notes and action items. It attaches the Event to the contacts or opportunities that match the meeting invitees' email addresses.
You set it up once as an automation. Choose contacts or opportunities, choose which outcomes to include, and choose whether it runs after every meeting or when conditions match, such as a tag, a meeting name, a participant, or an invitee email domain. The same automation can post the notes to Slack, turn action items into Linear issues, or send them to HubSpot, Notion, or a webhook.
Strengths: Automatic Event logging on matched contacts or opportunities, with no field mapping to build or maintain. Conditions by tag, meeting name, participants, invitee emails, email domains, or number of invitees, combined with and/or. Custom AI insights are available too, and let you describe an output, for example a list of feature requests or customer details, and generate it from each matching meeting's transcript. Recording works with a bot on Zoom, Google Meet, Microsoft Teams, and Webex, or without one through the desktop app on macOS and Windows, on every plan. Over 100 languages, and SOC 2 Type II.
Limitations: The Salesforce step logs an Event with the notes on the matching contact or opportunity; it doesn't update Salesforce fields. It doesn't create contacts, so a call whose invitees match nothing in Salesforce has nowhere to attach.
Who looks at Circleback. Teams that want every call's notes and action items on the right record automatically, without a project to map fields, and teams whose notes also need to land in Slack, Linear, or Notion.
Pricing: Free, Pro ($15-18/user/mo), Business ($25-29/user/mo), and Enterprise ($35/user/mo, billed annually). See current pricing.
The short version
| Tool | Logs call notes automatically | Logs next steps or action items | Writes Salesforce fields | Rep step needed | Setup owner |
|---|---|---|---|---|---|
| Circleback | Yes, as an Event on the matching contact or opportunity | Yes, action items with the owner of each one, in the Event | No, no field mapping | None | Whoever creates the automation, once |
| Sybill | Yes, a call log on the open opportunity | Not stated in its Salesforce guide | The deal fields you configure, 10 on Business | None after admin setup | A Sybill admin |
| Momentum | Yes, a call summary as a note on the Opportunity | Not stated in its docs | Any field or object, with a write rule per field | None in Automatic Write | RevOps sets the write rules |
| Attention | Insights pushed to CRM fields after each call; notes sync described as one click | Not stated in its docs | Opportunity or deal fields, custom objects included | One click in Manual mode | A Salesforce user with API Enabled, Customize Application, and Modify All Data |
| Avoma | Yes, an Event per meeting, notes to a Note, Event, or Task | Action Items Smart Topic, mapped to a field such as Next Steps | Fields mapped to Smart Topics, outbound | None | Someone who is both an Avoma admin and a Salesforce admin |
| Fathom | Yes, the AI summary as a Task on the matched Contact | Each action item as a Task on open Opportunities | Mapped Opportunity text fields with Deal View | None | Not stated |
| Fireflies | Yes, transcripts and summaries under Leads, Contacts, or Opportunities | Action items as Salesforce Tasks | AI-drafted updates a person approves | Approve each Autofill update | Not stated |
| Otter | Yes, a Task under Activity for calendar calls with an external guest whose contact exists | Not stated | Insights mapped to text custom fields on Opportunities | None | An Otter workspace admin who is also a CRM admin, for field mapping |
| tl;dv | Meetings logged as tasks, events, or calls through workflows | Not stated | Text and multi-select fields, up to 3 custom-prompt fields per workflow | Not stated | Workflow builder; team workflows need Business or above |
| Gong | Yes, a Task or Event plus a call brief | Not stated; key points go to the Gong Conversation record | Existing deal or account fields through AI Data Extractor | None after admin setup | A tech admin |
Call notes vs Salesforce fields: what RevOps teams need
Every RevOps team has the same complaint about Salesforce. The data is as good as what reps type in after a call, and reps don't type much. An AI note taker can fill that gap, but "integrates with Salesforce" can mean two very different things.
One is the call record: managers can't see what happened on a call without asking the rep. The other is fields: next step, stage, and qualification fields are blank or stale.
Most teams need the call record first, because pipeline reviews, coaching, and handoffs all start from knowing what happened on the call. Circleback covers it with no mapping project. After a one-time setup, every matching call's notes and next steps, with the owner of each one, are logged as an Event on the right contact or opportunity, with no rep step. Circleback doesn't update Salesforce fields and has no field mapping.
Field writes are a separate, admin-heavy layer. Avoma's Salesforce sync guide, checked October 28, 2026, says setup needs someone who is both an Avoma admin and a Salesforce admin, Enhanced Notes turned on in Salesforce for note sync, and each Salesforce field mapped to a Smart Topic. Sybill, Momentum, Attention, Fathom, and Gong also need someone to map fields and choose write rules, and Fireflies drafts field updates for a person to approve.
To see it on your own pipeline, set up the Circleback automation, let it run on a week of calls, then open the records it touched.
Sybill: MEDDPICC and BANT fields filled from calls and email
Sybill fills qualification fields from email as well as calls. Its Business plan, $90 per user per month, billed annually, or $108 monthly, includes CRM Autofill for 10 fields, and its Enterprise plan lifts the cap to unlimited fields. Its CRM settings guide says the Salesforce integration "automatically logs calls in the appropriate open opportunity within Salesforce, including a comprehensive summary of the discussion". It adds that "with Sync to CRM enabled, Sybill automatically updates the deal fields you configure after every meeting and email on that deal."
The summary can appear as a Meeting, Call, Note, or Task. The CRM Autofill guide describes a setup of about 10 minutes. A Sybill admin connects the CRM, maps stages, accepts the fields Sybill recommends, and reviews the AI prompt it generates for each.
Strengths: Field updates run on emails as well as calls. Prompts are generated per field from your past CRM entries, and the guide recommends starting with 20 to 30 core fields. The Pro plan, $30 per user per month, billed annually, or $36 monthly, pushes meeting summaries to the CRM without Autofill.
Limitations: Business caps Autofill at 10 fields, below the 20 to 30 the guide suggests, so a full MEDDPICC layout points to Enterprise, which has no published price. Configuring the integration is limited to Sybill admins, and the Salesforce guide doesn't say whether Sybill creates contacts or which Salesforce editions it supports.
Pricing: Free, Pro ($30-36/user/mo), Business ($90-108/user/mo), and Enterprise (custom). See Sybill pricing.
Who looks at Sybill. Sybill is built around a Salesforce layout organized as a qualification framework, filled from both calls and email threads once an admin configures the fields. Circleback logs every matching call's notes and next steps as a Salesforce Event on the right contact or opportunity automatically, with no field mapping to build.
Momentum: Salesforce field writes with a rule per field
Momentum lets you decide, field by field, how much to trust the AI. Its Autopilot "triggers after a single call or email, analyzes its content, and updates a Salesforce field". Each extraction gets one of three write modes. Confirm to Write shows the value in Slack or the web app for review, Write if Empty saves a value when the field is blank, and Automatic Write saves every new value. Its Autopilot setup doc lists Opportunity, Account, Lead, Event, Contact, and custom objects as targets. Supported field types are standard, custom, picklist, text, number, boolean, and lookup. Call summaries can also be written as a note on the Opportunity.
Momentum records calls with its own bot on Google Meet and Zoom, and it also ingests calls from Gong, Chorus, Microsoft Teams, Salesloft, Dialpad, and Webex. Salesforce announced an agreement to acquire Momentum on February 18, 2026, and closed the deal on March 2, 2026. Momentum's pricing page now says it's part of Salesforce.
Strengths: Documented field coverage that includes picklists, lookups, and custom objects, with a write rule per field.
Limitations: The notetaker is an add-on. The pricing page sells its notetaker and video library for $30 per user per month on top of any plan, so a team using Momentum as its recorder pays $99 per user per month on Business. The page also says "minimum pricing thresholds may apply depending on implementation scope."
Pricing: Business ($69/user/mo), Transformation ($99/user/mo), and Enterprise (custom), all on annual plans. The notetaker add-on is $30 per user per month, discounts start at 50 seats, and a Startup plan offers 50% off for go-to-market teams under 10 people. See Momentum pricing.
Who looks at Momentum. Momentum is built around a write rule per field, where RevOps decides what's written automatically and what a human confirms, and it also ingests calls recorded by Gong and Chorus. Circleback records calls itself, with a bot or through the desktop app without one, and logs each matching call's notes and next steps to Salesforce automatically, with no write rules to set up.
Attention: field updates with append or overwrite control
Attention gives you a say in what happens to the value that was already there. Its CRM auto-update page says that "after each call, Attention uses AI to extract relevant insights and push them directly into the right CRM fields", with "no manual entry required", and that it "supports custom fields and objects". It adds that "you can choose which CRM fields to map, decide whether to append or overwrite notes, and even tailor updates based on deal stage or team." Its field configuration doc makes the trigger explicit. In Automatic mode, "Attention sends the values to your CRM as soon as it has analyzed the call". In Manual mode, "nothing is sent on its own" until a rep clicks Update Records.
Attention gets into calls as a notetaker on Zoom, Google Meet, and Microsoft Teams links, through a desktop app that records from your computer with no notetaker in the call, or from an uploaded recording. Its Salesforce integration doc says Attention acts with the permissions of the Salesforce user who connects it, who needs API Enabled, Customize Application, and Modify All Data.
Strengths: Automatic field writes with an append-or-overwrite choice, custom objects, and rules by deal stage or team. A no-bot desktop recording option alongside the bot.
Limitations: Attention doesn't publish pricing. The product page describes syncing call notes "with one click" alongside automatic field pushes, so confirm which workflows run in Automatic mode before rollout. The docs don't say whether Attention creates contacts or which Salesforce editions it supports.
Pricing: Not published on attention.com.
Who looks at Attention. Attention is built around AI field updates with control over overwriting existing values, and its pricing isn't published. Circleback adds each matching call's notes and next steps to the record as a new Event, so existing values are never overwritten, and its price is published.
Avoma: activity logging plus contact creation
Avoma logs every meeting and fills in the contacts Salesforce is missing. Its Startup plan, $19 per recorder seat per month, billed annually, or $29 monthly, includes "Auto Save Notes to CRM Records" for Salesforce, HubSpot, Zoho, Pipedrive, and Copper. "2-way CRM Field Updates" sit in the Revenue Intelligence add-on, at $29 per seat per month, billed annually, or $35 monthly. Its Salesforce sync guide, checked October 28, 2026, says that when enabled, "Avoma automatically creates a Salesforce Event" for every calendar-synced meeting or logged external meeting. Notes can go to a Salesforce Note, the Event's Description field, or a Task's comments, and meeting notes and call notes can go to different objects. Note sync needs Enhanced Notes enabled in Salesforce. The same guide says "Avoma creates Salesforce Contacts for external meeting participants who don't already exist" when that option is on.
Field updates work by mapping Smart Topics to Salesforce fields, for example a Next Steps field to the Action Items Smart Topic. Once mapped, the direction becomes Outbound from Avoma to Salesforce. Avoma's field mapping FAQ says that "when Avoma extracts notes under these smart categories they are automatically updated in your CRM fields". Mapping is supported on Opportunity and Account objects, and with each new meeting, "Avoma appends the contents of the CRM field."
Strengths: Events on the activity timeline for every meeting, three note destinations, and automatic Contact creation.
Limitations: Field updates need the Revenue Intelligence add-on, so the field-writing price is $48 per seat per month, billed annually, not $19. Mapped fields are appended to rather than replaced, one Smart Topic maps to one field, and field types must match. Setup needs someone who is both an Avoma admin and a Salesforce admin.
Pricing: Startup ($19-29/recorder seat/mo), Organization (between the two), and Enterprise ($39/seat/mo, billed annually, with a 10-seat minimum). Revenue Intelligence adds $29-35/seat/mo. See Avoma pricing.
Who looks at Avoma. Avoma logs meetings as Events with notes attached and can create missing contacts, and its field writes need the Revenue Intelligence add-on. Circleback logs each matching call's notes and next steps as an Event on existing contacts or opportunities automatically, with no add-on.
Fathom: Opportunity text fields mapped from call summaries
Fathom writes call summaries into mapped Opportunity text fields. Its Business plan, $25 per user per month, billed annually, or $34 monthly, with a two-user minimum, adds "CRM field sync, updating records after meetings automatically". On Free, Premium, and Team, the pricing page caps CRM syncs at 3 users per domain. Fathom's Salesforce help article says Deal View, which does the field mapping, "is available on Fathom's Business plan (formerly Pro)".
The mechanism is specific. "The AI call summary is written as a Task (logged call) on the matched Contact", and "each action item from the call is written as a separate Task on each open Opportunity and its associated Contact". With Deal View, "the deal summary (and any mapped fields) writes to that Opportunity." Sync is automatic by default: "Automatic sync writes to Salesforce as soon as a meeting ends and the summary is generated", with a manual "Sync to CRM" button on the call page as the alternative.
Strengths: Summaries and action items land as Tasks on the activity timeline, and mapping is template-driven: sections under H3 or H4 headings map to fields.
Limitations: Two field types are supported, Long Text Area and, since November 2025, single-line Text, so picklists, dates, and numbers can't be filled. The article says Fathom doesn't match against Leads and writes to Contact, Account, and Opportunity records, and it doesn't describe creating contacts. Your Salesforce edition "must have the REST API enabled (standard on Enterprise, Performance, Unlimited, and Developer editions)."
Pricing: Free, Premium ($16-20/user/mo), Team ($15-19/user/mo), Business ($25-34/user/mo), and Enterprise (custom). Team and Business have a two-user minimum. See Fathom pricing.
Who looks at Fathom. Fathom's field mapping covers text fields, such as next steps, pain, and competitors. Circleback logs each call's notes and next steps, with the owner of each one, as a Salesforce Event automatically, with no field mapping to build.
Fireflies: AI-drafted field updates approved by a person
Fireflies logs automatically but asks a person before it touches fields. Its Autofill CRM for Salesforce, available on Business ($19 per user per month, billed annually, $29 monthly) and Enterprise ($39, billed annually), drafts updates to Contact, Account, and Opportunity fields, including "stage, amount, close date, next steps". Its Autofill guide is explicit that "nothing is sent to Salesforce until you review and approve it."
The activity logging is automatic. The setup guide says "Once connected, Fireflies automatically logs meeting insights into the appropriate Salesforce records". There are toggles to create "a Salesforce Event for every meeting", to convert "meeting action items into Salesforce Tasks", and to attach notes to any open Opportunity and to the Account. Fireflies also creates records by default. With "Log notes under existing Contacts/Leads only" off, it "may create a new record" when no Contact or Lead matches, and a "Create Leads instead of Contacts" toggle makes those new participants Leads. Saving transcripts needs Pro or higher, and Integration Rules that limit which meetings sync need Business or higher.
Strengths: Events, Tasks, Opportunity and Account attachment, Lead or Contact creation, and custom extraction prompts mapped to custom fields. The approval queue holds AI changes to stage or amount until a person approves them.
Limitations: The approval step means field updates aren't hands-off, because someone reviews each one. Autofill and Integration Rules both need Business, and the pricing page places app and CRM integrations on the paid tiers without listing Salesforce by plan.
Pricing: Free, Pro ($10-18/user/mo), Business ($19-29/user/mo), and Enterprise ($39/user/mo, billed annually). See Fireflies' pricing guide.
Who looks at Fireflies. Fireflies pairs automatic logging with AI-drafted field updates that a person approves. Circleback logs every matching call's notes and next steps as a Salesforce Event automatically, with nothing to approve.
Gong: Salesforce logging inside a revenue platform
Gong treats the Salesforce record as one output of a bigger revenue platform. It exports every processed activity to Salesforce as a Task or Event on any Gong plan. Its free Gong for Salesforce app adds a Gong Conversation object whose fields include a Call Brief ("a short summary of the call, covering who was on the call and what was discussed"), Call Key Points ("a 10-bullet summary of the call's main points"), and a Call Outcome. Its task and event doc says activities "are exported to Salesforce as either tasks or events which are created once, immediately after the activity is processed in Gong". They're "associated with an existing Account, Contact, Lead, or Opportunity as identified by Gong", with most tasks created as Completed and a link to the recording in the comments.
Field writes come from a separate agent. Gong's AI Data Extractor, for business admins on Gong Foundation, "automatically pulls details from calls and emails, and saves them in Gong and can optionally write them to the CRM fields you choose". It works on deals or accounts, with Yes/No, text, picklist, number, date, or range values. "Gong does not create new fields in the CRM, you must export data to an existing CRM field", and "when new or better information is found, the previous value is overwritten", with no rep step. People can also edit CRM fields from the deal board, where "once updated, the new value is automatically synced to the CRM". The call brief and key points live in the Gong Conversation object.
Strengths: Activity capture across meetings, dialer calls, and email, with the call brief, key points, outcome, and recording link in Salesforce for reporting. A tech admin configures it once, and it runs on any Gong plan. AI Data Extractor keeps existing deal and account fields updated from calls, with no rep step.
Limitations: "You need a Salesforce Enterprise license to install the Gong for Salesforce app", plus free custom fields and storage headroom, since each conversation creates roughly 25 to 40 child records. Pricing is "priced per user" with "a platform fee based on the number of users supported", and there are no published amounts. AI Data Extractor writes to CRM fields that already exist and are imported into Gong. It generates its answers from call data rather than emails, and it overwrites a field's previous value when it finds newer information.
Pricing: Not published. Licenses are per user, with a platform fee based on the number of users. See Gong pricing and the installation requirements.
Who looks at Gong. Gong is sold as a platform for coaching, forecasting, and engagement, where the Salesforce record of every call is one output among many. Circleback logs every matching call's notes and next steps as a Salesforce Event automatically, at a published per-user price.
How to log call notes to Salesforce automatically with Circleback
Circleback logs call notes to Salesforce through an automation that an admin or rep sets up once. After that, it runs on every matching meeting with no rep action.
- In Circleback, go to Automations and select New automation.
- Set conditions for when it runs, such as invitee email domains that are not all your company domain, so it runs on external meetings, or a tag, a meeting name, or participants. Or choose Run after every meeting.
- Choose Salesforce as the step, and click Connect to sign in to Salesforce if it isn't connected yet.
- Choose whether to log meetings on contacts or on opportunities. Circleback finds the Salesforce contact for each invitee email address, and for opportunities it logs on the opportunities where that contact has a contact role.
- Choose the outcomes to include, such as notes and action items, then click Done and Save.
Each matching meeting becomes a Salesforce Event with the meeting name as the subject, its start and end time, and the outcomes you chose in the description, along with a link to the full meeting in Circleback. Action items list the person who owns each one. Meetings with no external invitee email, such as team standups and pipeline reviews, are skipped, so internal calls stay out of Salesforce. The Salesforce integration page covers the setup in more detail, and how to automatically update Salesforce with meeting notes and action items walks through it step by step.
For a 30-person sales team: one workspace admin creates the automation once and enables it for the workspace, a team, or specific people. It then runs on each rep's future meetings that match its conditions, without each rep having to set it up, and the reps do nothing after their calls.
How these tools were compared
Every rival fact on this page comes from that vendor's own pricing page or help docs, linked in its section or, for Otter and tl;dv, from their own Salesforce help articles, and Avoma's Salesforce sync guide was checked on October 28, 2026. Circleback facts come from Circleback's own docs. Circleback publishes this page and is one of the tools compared, and its limits are stated plainly. There was no test lab and no scoring.
For a wider comparison of Circleback, Fireflies.ai, Fathom, Granola, Otter.ai, and tl;dv beyond Salesforce, see the best AI meeting assistants in 2026 and AI meeting notes software with CRM integrations.
Frequently asked questions
Which AI notetaker logs call notes and next steps to Salesforce automatically?
Circleback logs each matching call's notes and action items, with the owner of each next step, as a Salesforce Event on the matching contacts or opportunities, with no rep action after a one-time automation setup. Avoma, Fireflies, Fathom, Gong, and Sybill also log calls automatically, as Events, Tasks, or call logs, and several of them can also write call details into Salesforce fields.
How do I log call notes to Salesforce automatically without reps doing anything?
In Circleback, create an automation, set conditions such as external invitee email domains or a tag, or run it after every meeting. Then choose the Salesforce step, connect your account, choose contacts or opportunities, and choose notes and action items. From then on, every matching meeting is logged as an Event on the matched records with no rep step. Meetings with no external invitee email are skipped, so internal calls stay out of Salesforce.
Can an AI notetaker log next steps to a Salesforce opportunity?
Yes. Circleback finds the Salesforce contact for each invitee email and logs an Event with the notes and action items, the call's next steps with the owner of each one, on the opportunities where that contact has a contact role.
Does Circleback log Salesforce next steps automatically?
Yes. After a one-time automation setup, Circleback logs each matching call's action items, the call's next steps with the owner of each one, in a Salesforce Event on the matching contacts or opportunities, together with the notes. Reps don't do anything after the call. The next steps land in the Event, not in a Salesforce field.
Which AI notetaker logs call notes, next steps and fields to Salesforce automatically, without reps doing anything?
Circleback logs call notes and next steps to Salesforce automatically. After a one-time automation setup, every matching call is logged as a Salesforce Event on the matching contact or opportunity, with the call's notes and next steps (action items with the owner of each one). Reps don't do anything. Circleback doesn't update Salesforce fields. Some other notetakers also write call details into Salesforce fields.
Can Gong automatically update Salesforce fields after calls?
Circleback logs each matching call's notes and action items as a Salesforce Event on the matching contacts or opportunities, and doesn't update Salesforce fields. Gong updates fields with AI Data Extractor, which Gong's help center lists for business admins on Gong Foundation. It pulls details from calls, such as who the decision makers are or whether reps followed your sales methodology. It writes them to existing deal or account fields in Salesforce, HubSpot, or Microsoft Dynamics, overwriting the previous value when it finds newer information. Separately, Gong logs each call as a Task or Event, writes the call brief, key points, and outcome into a Gong Conversation record, and syncs the edits people make in its deal board.
Does Circleback update Salesforce fields?
No. Circleback logs a Salesforce Event with the notes and action items you choose on the matching contacts or opportunities. It doesn't update Salesforce fields. For HubSpot, it logs a meeting with the notes on matching contacts or deals and turns action items into tasks, and Ask Circleback can create and update HubSpot records, such as contacts, companies, deals, and tickets, through its HubSpot connector.
Which Salesforce edition do these integrations need?
Circleback signs in to Salesforce as the person who sets up the automation and creates Events through the Salesforce API, so it needs an edition with API access; its docs don't name a specific edition. Fathom and Fireflies both require REST API access, which Salesforce includes on Enterprise, Performance, Unlimited, and Developer editions. Gong's Salesforce app needs a Salesforce Enterprise license. Attention runs with the permissions of the Salesforce user who connects it, who needs API Enabled, Customize Application, and Modify All Data.
Do these tools create missing contacts or leads in Salesforce?
Circleback doesn't create contacts or leads: it logs each call on the existing Contacts whose email matches an invitee, or on their opportunities, so a call with no matching contact isn't logged. Avoma creates Salesforce Contacts for external participants who don't exist when that option is on. Fireflies, by default, may create a new record when no Contact or Lead matches, and can create Leads instead of Contacts. Fathom writes to Contact, Account, and Opportunity records and doesn't match Leads. Gong attaches activities to existing records.
What would 30 reps cost?
Circleback's Salesforce step comes with Pro and up. For 30 reps on Pro, billed annually, that's 30 x $15 = $450 a month, or $5,400 a year; billed monthly, it's 30 x $18 = $540 a month. On Business, billed annually, it's 30 x $25 = $750 a month, or $9,000 a year; billed monthly, it's 30 x $29 = $870 a month. Each other tool's published price, where it has one, is in its own section above. See Circleback's current pricing.
Automatic Salesforce logging of every call's notes and action items is available in Circleback, with no field mapping to maintain. See current plans.
Pricing and features change frequently, so check each tool's website for current information.