CRM integration research

Compare how 20 CRMs connect to your software stack.

See priority app connections, official integration directories, developer API access, webhook evidence, and the technical questions to verify before choosing a CRM.

A technical starting point—not a compatibility guarantee

All 20 products have official developer documentation in this snapshot. Webhooks were explicitly documented for 18; the remaining records say “not confirmed,” not “unsupported.” Marketplace listings may be supplied by the CRM vendor, an independent app vendor, or an automation platform.

Integration buyer's guides

Start with the workflow you need to connect.

These guides turn a marketplace logo into a repeatable technical test. Each one covers data ownership, sync direction, permissions, failure handling, cost, and exit risk.

Technical decision guide

Xero CRM integrations

Compare CRM and Xero integration options, with practical tests for contacts, quotes, invoices, tax, currencies, duplicate prevention, and sales-to-finance handoff.

Open the Xero guide →

What to verify

The integration name is only the beginning.

Before buying, confirm the provider, supported plan, objects transferred, sync direction and timing, field mappings, conflict handling, API limits, security scopes, failure logs, and any separate subscription.

ATChecked 23 Aug 2026

Attio integrations

Attio supports native apps, workflow blocks, Zapier, a public REST API, OAuth apps, signed webhooks, and a developer app platform.

Official directory
Attio Apps ↗
Developer API
Documented
Webhooks
Documented
Google WorkspaceMicrosoft 365ZapierCustom API
  • Attio-built apps and third-party marketplace apps can expose different workflow blocks and sync behaviour.
  • Verify API scopes, webhook event version, credit consumption, object support, and plan limits.
BIChecked 23 Aug 2026

Bigin by Zoho CRM integrations

Bigin connects to Zoho and third-party tools through direct integrations, Zoho Flow, Toppings, REST APIs, notifications, and workflow webhooks.

Official directory
Bigin Integrations ↗
Developer API
Documented
Webhooks
Documented
Google WorkspaceMicrosoft 365QuickBooksZapierZoho suite
  • Webhook and automation availability can depend on the paid edition.
  • Separate direct integrations from connections built through Zoho Flow or custom Toppings.
CAChecked 23 Aug 2026

Capsule CRM integrations

Capsule offers direct small-business integrations, automation connectors, a REST API, and REST hooks for event-driven synchronisation.

Official directory
Capsule Integrations ↗
Developer API
Documented
Webhooks
Documented
Google WorkspaceMicrosoft 365XeroZapier
  • Capsule's direct accounting connections are a meaningful differentiator for some small businesses.
  • Verify plan eligibility, supported records, sync direction, and the integration provider's separate pricing.
CLChecked 23 Aug 2026

Close integrations

Close provides built-in connections, a growing integration directory, automation-platform connectors, REST APIs, OAuth, and webhooks.

Official directory
Close Integrations ↗
Developer API
Documented
Webhooks
Documented
Google WorkspaceMicrosoft 365Zapier
  • Close labels a mixture of built-in, partner, and automation-platform integrations in its directory.
  • Verify whether a connection synchronises leads, contacts, opportunities, activities, calls, or only selected fields.
COChecked 23 Aug 2026

Copper integrations

Copper centres its direct experience on Google Workspace and supplements it with listed partner apps, Zapier, a REST API, and webhooks.

Official directory
Copper Integrations ↗
Developer API
Documented
Webhooks
Documented
Google WorkspaceZapierQuickBooks
  • Copper's strongest direct integration advantage is its Google-oriented workflow.
  • Confirm whether accounting and other partner connections are direct, Zapier-based, or supplied by an independent vendor.
FOChecked 23 Aug 2026

folk integrations

folk combines email and calendar connections, communication and enrichment apps, Zapier and Make automation, a public API, and webhooks.

Official directory
folk Integrations ↗
Developer API
Documented
Webhooks
Documented
Google WorkspaceMicrosoft 365Zapier
  • Some folk connections sync data directly while others are automation recipes or browser-assisted imports.
  • Verify objects, workflow events, credit usage, and whether the connection is one-way or two-way.
FSChecked 23 Aug 2026

Freshsales integrations

Freshsales connects through Freshworks Marketplace apps, Freshworks-suite products, REST APIs, and app-platform events.

Official directory
Freshworks Marketplace ↗
Developer API
Documented
Webhooks
Documented
Google WorkspaceMicrosoft 365QuickBooksZapierFreshworks suite
  • Marketplace listings can support different Freshworks products, so confirm that Freshsales or Freshsales Suite is explicitly listed.
  • Some connector apps use pay-as-you-use or in-app pricing.
HLChecked 23 Aug 2026

HighLevel integrations

HighLevel combines an app marketplace, workflow integrations, OAuth and private integrations, REST APIs, and a broad webhook event catalogue.

Developer API
Documented
Webhooks
Documented
Google WorkspaceMicrosoft 365QuickBooksZapierCustom API
  • Marketplace availability and API scopes can differ between agency and sub-account contexts.
  • Communication providers, AI services, email, phone, and premium actions can introduce usage-based charges.
HSChecked 23 Aug 2026

HubSpot Sales Hub integrations

HubSpot combines a large app marketplace with CRM APIs and webhook subscriptions for event-driven integrations.

Official directory
HubSpot App Marketplace ↗
Developer API
Documented
Webhooks
Documented
Google WorkspaceMicrosoft 365XeroQuickBooksZapier
  • Marketplace availability does not mean every app is included in every HubSpot plan.
  • Verify each app's data direction, required scopes, usage limits, and separate vendor charges.
KEChecked 23 Aug 2026

Keap integrations

Keap provides a marketplace for partner applications together with REST APIs, OAuth, and event hooks for custom small-business automation.

Official directory
Keap Marketplace ↗
Developer API
Documented
Webhooks
Documented
Google WorkspaceMicrosoft 365QuickBooksZapierCustom API
  • Marketplace apps may require separate subscriptions, implementation, or certified-partner services.
  • Confirm contact permissions, OAuth scopes, API quotas, hook events, and compatibility with the current Keap product.
LAChecked 23 Aug 2026

Less Annoying CRM integrations

Less Annoying CRM lists direct and partner integrations, offers Zapier connectivity, and publishes an API for custom connections.

Developer API
Documented
Webhooks
Not confirmed
Google WorkspaceMicrosoft 365Zapier
  • The directory mixes direct, partner, extension, and Zapier-supported connections.
  • General outbound webhook support was not confirmed in the official material reviewed; use the API or a listed connector where appropriate.
MOChecked 23 Aug 2026

monday CRM integrations

monday CRM uses the wider monday Marketplace and platform API, with apps, integration recipes, automations, GraphQL, and webhooks.

Official directory
monday Marketplace ↗
Developer API
Documented
Webhooks
Documented
Google WorkspaceMicrosoft 365QuickBooksZapiermonday work management
  • Marketplace apps that require integrations cannot run on the Basic plan according to monday's current support guidance.
  • Verify board mappings, automation quotas, app pricing, permissions, and whether the app supports monday CRM specifically.
NIChecked 23 Aug 2026

Nimble integrations

Nimble provides direct Google and Microsoft relationship context, a partner marketplace, automation connectors, and an API for custom applications.

Official directory
Nimble App Marketplace ↗
Developer API
Documented
Webhooks
Not confirmed
Google WorkspaceMicrosoft 365Zapier
  • Marketplace entries include vendor-built, partner-built, Zapier-based, and migration connections.
  • General webhook subscriptions were not confirmed in the official developer material reviewed.
NSChecked 23 Aug 2026

Nutshell integrations

Nutshell combines instant integrations, an app marketplace service, Zapier connections, open APIs, and outbound webhooks.

Official directory
Nutshell Integrations ↗
Developer API
Documented
Webhooks
Documented
Google WorkspaceMicrosoft 365QuickBooksZapier
  • Nutshell distinguishes instant, marketplace-assisted, Zapier, and custom API connections.
  • AppConnect eligibility and limits can depend on CRM seat count and current commercial terms.
OPChecked 23 Aug 2026

OnePageCRM integrations

OnePageCRM supplies a curated integrations directory plus APIs, webhooks, OAuth, query tools, and extension points for custom workflows.

Official directory
OnePageCRM Integrations ↗
Developer API
Documented
Webhooks
Documented
Google WorkspaceMicrosoft 365Zapier
  • Confirm whether the selected integration is direct or runs through an automation provider.
  • Developer capabilities cover core CRM entities, but each endpoint and event should be validated against the intended workflow.
PDChecked 23 Aug 2026

Pipedrive integrations

Pipedrive provides a searchable marketplace, REST APIs, OAuth apps, and webhooks for sales-data connections and workflow automation.

Official directory
Pipedrive Marketplace ↗
Developer API
Documented
Webhooks
Documented
Google WorkspaceMicrosoft 365XeroQuickBooksZapier
  • Confirm whether a marketplace app is built by Pipedrive or an independent provider.
  • Check API version, token limits, webhook version, and any integration subscription before implementation.
PLChecked 23 Aug 2026

Pipeline CRM integrations

Pipeline CRM documents connections for email, calendars, accounting, and automation tools alongside API and developer guidance.

Developer API
Documented
Webhooks
Documented
Google WorkspaceMicrosoft 365QuickBooksZapier
  • API configuration requires administrative access.
  • Confirm whether a connection is included, managed, Zapier-based, or subject to a separate service charge.
SFChecked 23 Aug 2026

Salesforce Starter Suite integrations

Salesforce offers the AppExchange ecosystem and extensive developer APIs, with event-driven options available across the wider platform.

Official directory
Salesforce AppExchange ↗
Developer API
Documented
Webhooks
Documented
Google WorkspaceMicrosoft 365QuickBooksZapierSalesforce AppExchange
  • An AppExchange listing may be native, managed, external, or dependent on another subscription.
  • Starter Suite access can differ from higher Sales Cloud editions; verify edition permissions before selecting an integration.
SMChecked 23 Aug 2026

Salesmate integrations

Salesmate documents direct integrations, automation-platform connections, product APIs, and API or webhook actions inside Smart Flows.

Official directory
Salesmate Integrations ↗
Developer API
Documented
Webhooks
Documented
Google WorkspaceMicrosoft 365QuickBooksZapier
  • Workflow HTTP actions and inbound or outbound webhooks serve different integration patterns.
  • Confirm plan access, API authentication, supported events, and connector-specific field mappings.
ZOChecked 23 Aug 2026

Zoho CRM integrations

Zoho CRM supports marketplace extensions, connections across the Zoho suite, REST APIs, notification APIs, and workflow webhooks.

Developer API
Documented
Webhooks
Documented
Google WorkspaceMicrosoft 365QuickBooksZapierZoho suite
  • Zoho integrations can be native suite connections, marketplace extensions, Zoho Flow automations, or custom API work.
  • Edition, data-centre domain, OAuth scopes, and daily API allowances require verification.

Use your own workflow

Test the connection before the contract.

Move realistic sample records through each finalist. Check duplicates, custom fields, ownership, historical activity, error handling, disconnect behaviour, and exports—not just whether the setup screen says “connected.”

Open the CRM Trial Kit