Why Reqable Beats Postman: Free, Fast, and Feature‑Rich API Testing

Free functionality

Earlier community builds of Reqable limited the number of API collections and tags. The current release removes all such caps, allowing unlimited request sending, collection saving, and environment management without any licensing cost.

All data resides on the local machine; there is no cloud sync, eliminating external data‑security concerns and enabling seamless operation on isolated intranets.

No login, registration, or advertisement steps are required—installation is sufficient to start creating API tests.

Performance

Reqable is implemented with Flutter for the UI layer and native C++ for core networking, resulting in near‑instant launch, low idle memory footprint, and minimal disk usage.

Performance was measured on a MacBook Pro 2017 using the latest releases (January 2024). Startup latency was derived by recording the launch screen and calculating frame differences; idle memory was recorded while the app remained in the background. Compared with browser‑based wrappers such as Postman, Apifox, Apipost, Bruno, and Insomnia, Reqable launched noticeably faster and consumed less memory.

Flutter’s support for 120 Hz (or higher) refresh rates provides smoother UI interactions than the typical 60 Hz rendering of Electron‑based tools.

UI simplicity

The interface follows a minimalist design. Selecting API测试 during first‑run or switching to 禅模式 removes non‑essential panels, yielding a clean workspace.

Multiple themes are available, including light and dark modes, 15 syntax‑highlight color schemes, and 16 accent color palettes (additional customization is offered in the paid tier).

Data migration

Reqable can import collections from several existing REST tools:

Postman

Hoppscotch

ApiPost

ApiFox

cURL command files

HAR archives

Future releases plan to add direct import for OpenAPI specifications and Insomnia export formats.

HTTP/2 and HTTP/3 support

Unlike many competing clients, Reqable can issue requests over HTTP/2 and HTTP/3 (QUIC). This capability is essential as modern servers increasingly enforce these protocols, and few other tools provide native support.

Integrated traffic capture and debugging

Beyond standard API testing features (environment variables, Python pre‑request scripts, code generation), Reqable embeds a packet capture engine. It can:

Analyze traffic from browsers or native applications.

Generate API definitions directly from captured packets.

Map live server requests to a local development server for rapid iteration.

Compare two request/response pairs with a built‑in diff view to isolate differences causing failures.

This workflow eliminates manual transcription of request details and accelerates debugging of complex client‑server interactions.

Community activity

Although the product itself is closed‑source, the surrounding ecosystem is hosted on GitHub. Within less than two years the repository accumulated over 1 000 reported issues, with an 80 % resolution rate. By contrast, the comparable Postman repository lists more than 13 000 issues.

Open‑source contributions

Reqable builds on the open‑source Flutter framework and contributes back two libraries:

re‑editor – a code editor widget widely adopted in other Flutter projects.

re‑highlight – a syntax‑highlighting engine used by numerous third‑party applications.

Both libraries are released under permissive licenses and have been integrated into many external projects.

Resources

Official website: https://reqable.com/zh-CN/

GitHub repository: https://github.com/reqable/reqable-app