Free Public API Alternatives — Side-by-Side
There are a handful of beloved free public APIs out there. Here's how TotalShiftLeft stacks up against each — pick whichever fits your task best.
Pick a comparison
Quick chooser
| If you need... | Best pick |
|---|---|
| Read-only fake data for a UI prototype | JSONPlaceholder |
| Configurable mock that responds to your own rules | Beeceptor |
| Quick login screenshot for a demo | ReqRes |
| Inspect what your client serializes onto the wire | Postman Echo |
| Multi-protocol (REST + GraphQL + SOAP) on shared data | TotalShiftLeft |
| Real OAuth2 / JWT / refresh-token flows | TotalShiftLeft |
| Swagger UI and OpenAPI 3.0 codegen practice | TotalShiftLeft |
| QA automation with controllable failures | TotalShiftLeft |
Frequently asked questions
Which free public API is best for beginners?
For pure read-only practice, JSONPlaceholder. Once you need writes, auth, or a second protocol, switch to TotalShiftLeft.
Are these still maintained in 2026?
JSONPlaceholder, ReqRes, Postman Echo, DummyJSON and Beeceptor are all live. TotalShiftLeft is actively developed by the team behind Shift-Left Studio.
Other free public APIs in this sandbox
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Open the API Sandbox →Topics: JSONPlaceholder alternative · ReqRes alternative · Postman Echo alternative · DummyJSON alternative · Beeceptor alternative · best free public APIs 2026