Business APIs cover company data, market research, and operational tools. Access business registrations, financial reports, and industry data to power enterprise applications and analytics dashboards.
| Name | Description | Auth | HTTPS | CORS | Status |
|---|---|---|---|---|---|
| Apache Superset | API to manage your BI dashboards and data sources on Superset | apikey | Yes | yes | unknown |
| Charity Search | Non-profit charity data | apikey | No | unknown | unknown |
| Clearbit Logo | Search for company logos and embed them in your projects | apikey | Yes | unknown | unknown |
| Freelancer | Hire freelancers to get work done | oauth | Yes | unknown | unknown |
| Gmail | Flexible, RESTful access to the user's inbox | oauth | Yes | unknown | unknown |
| Google Analytics | Collect, configure and analyze your data to reach the right audience | oauth | Yes | unknown | unknown |
| Instatus | Post to and update maintenance and incidents on your status page through an HTTP REST API | apikey | Yes | unknown | unknown |
| Mailchimp | Send marketing campaigns and transactional mails | apikey | Yes | unknown | unknown |
| mailjet | Marketing email can be sent and mail templates made in MJML or HTML can be sent using API | apikey | Yes | unknown | unknown |
| markerapi | Trademark Search | none | No | unknown | unknown |
| ORB Intelligence | Company lookup | apikey | Yes | unknown | unknown |
| Redash | Access your queries and dashboards on Redash | apikey | Yes | yes | unknown |
| Smartsheet | Allows you to programmatically access and Smartsheet data and account information | oauth | Yes | no | unknown |
| Square | Easy way to take payments, manage refunds, and help customers checkout online | oauth | Yes | unknown | unknown |
| SwiftKanban | Kanban software, Visualize Work, Increase Organizations Lead Time, Throughput & Productivity | apikey | Yes | unknown | unknown |
| Tenders in Hungary | Get data for procurements in Hungary in JSON format | none | Yes | unknown | unknown |
| Tenders in Poland | Get data for procurements in Poland in JSON format | none | Yes | unknown | unknown |
| Tenders in Romania | Get data for procurements in Romania in JSON format | none | Yes | unknown | unknown |
| Tenders in Spain | Get data for procurements in Spain in JSON format | none | Yes | unknown | unknown |
| Tenders in Ukraine | Get data for procurements in Ukraine in JSON format | none | Yes | unknown | unknown |
| Tomba email finder | Email Finder for B2B sales and email marketing and email verifier | apikey | Yes | yes | unknown |
| Trello | Boards, lists and cards to help you organize and prioritize your projects | oauth | Yes | unknown | unknown |
6 of these APIs require no authentication — you can start making requests immediately without signing up for an account. Just pick one from the table above, check its documentation, and send your first request.
10 APIs in this category require a free API key. This usually means creating a free account on the provider's website and copying your key from the dashboard. The process typically takes less than a minute.
Not sure where to start? Look for APIs marked as "alive" in the status column — these were recently verified as working. For browser-based projects, check that the API supports CORS.
Yes, all APIs listed on API Bouncer have a free tier. Some are completely open (no sign-up needed), while others require a free account to get an API key. Free tiers typically have rate limits — check each API's documentation for specifics.
It depends on your needs. Consider: Do you need authentication or prefer no-auth? Does your project need CORS support for browser access? How many requests will you make? Start with a no-auth API to prototype quickly, then switch to a more feature-rich option if needed.
We run periodic health checks on all listed APIs. The "Status" column shows whether each API was responding at our last check. APIs marked as "alive" were recently verified. You can also test any API yourself using curl or our guides on testing APIs.
Most free APIs allow commercial use, but terms vary by provider. Always check the specific API's terms of service. Some APIs have separate free and commercial tiers with different rate limits.
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