# Postcatlab/postcat

Postcat 是一个可扩展的 API 工具平台。集合基础的 API 管理和测试功能，并且可以通过插件简化你的 API 开发工作，让你可以更快更好地创建 API。An extensible API tool.

Repository: https://github.com/Postcatlab/postcat
Canonical: https://ross.abutalabs.com/products/postcat
Homepage: https://www.postcat.com
Language: JavaScript
License: Apache-2.0
License Family: permissive
Topics: electron, typescirpt, angular, api, nodejs, vue
Last push: 2026-02-27T02:07:58+00:00

## Health v2 (maintenance only)
Score: 54/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 69, release rhythm 8, longevity 100
- inputs: {"age_days": 1743, "days_push": 188, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5542, forks 798 (observed 2026-08-28T04:09:22.220334+00:00)

## What it is
Postcat is an open-source, cross-platform API development and testing tool supporting REST and WebSocket protocols, with API design, documentation, mock, and team collaboration features. It has a plugin system for extensibility, but the project is now officially discontinued and unmaintained.

## Use cases
- test REST APIs with a GUI client
- design and document APIs
- mock API responses during development
- manage WebSocket connections
- extend an API client with custom plugins
- share API docs with a team
- find a free Postman alternative

## When to choose
- you need a free, lightweight GUI API client for REST or WebSocket
- you want an extensible API tool with a plugin system
- you're okay using software without future updates or security fixes

## When to avoid
- you need actively maintained software with security patches
- you need GraphQL, gRPC, or other protocols beyond REST/WebSocket
- you rely on long-term vendor support for production tooling

## Facets
- artifact type: application
- maturity: abandoned
- function: http-client, developer-tools, mock-api, api-framework, plugin-system
- domain: developer-tools, apis, web-development, testing
- platform: cross-platform, windows, browser
- tags: api-client, api-testing, api-documentation, postman-alternative, rest-client, websocket-client, extensible, discontinued, electron, macos, linux, web-server

## Member repositories
- Postcatlab/postcat (main) score 54

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:22.220334+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:55:41.722628+00:00, confidence not recorded.
  - readme: https://github.com/Postcatlab/postcat (fetched 2026-08-28T04:09:22.220334+00:00, sha 102c694f8cc7)
- Data as of 2026-08-30T08:39:29.467469+00:00.