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Top 5 Business & CRM APIs

Ranked by popularity score. A comparison view generated from structured frontmatter (pricing, auth, docs links).

RankAPIFree tierStarting fromAuthDetails
1
Salesforce API
Access Salesforce CRM data including accounts, contacts, leads, opportunities, and custom objects through REST, SOAP, and Bulk APIs.
No$25/user/month (Starter Suite)oauth2View
2
Shopify API
Build custom e-commerce experiences, manage products, orders, customers, and integrate with Shopify's commerce platform through Admin and Storefront APIs.
YesFreeoauth2View
3
Jira API
Integrate with Jira's project management and issue tracking platform to manage issues, projects, sprints, and automate development workflows.
YesFreeoauth2View
4
HubSpot API
Integrate with HubSpot's CRM, marketing, sales, and service platform to manage contacts, deals, emails, and automate customer workflows.
YesFreeoauth2View
5
Trello API
Manage Trello boards, lists, and cards programmatically. Automate workflows, sync data, create custom integrations, and build tools on top of Trello's flexible kanban system.
YesFree (10 boards/workspace)oauth2View