Dev tools · alternatives · 2026
24 alternatives to ReqBeam – Open Source API Tool
A clean, developer-first way to manage and test your APIs.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
- 2
- 3OD
Effortlessly discover API behaviour with a Chrome extension that automatically generates OpenAPI specifications in real time for any app or website.
2023 · github.com · its alternatives →
- 4MA
2022 · github.com · its alternatives →
- 5NW
2021 · github.com · its alternatives →
- 6
Generate, edit, lint & test your API workflow in one place
Sep 2025 · app.getelva.ai · its alternatives →
- 7
- 8
- 9RO
Last time I posted this it didn't garner much interest. There have been lots of improvements and fixes since the last release. Quick list of features: - Workspaces - Tabs - Nested Folders - Lots of context menus - Response history - Plugins - Runs fully in the browser and runs offline if necessary - Chrome and Firefox extension to bypass CORS restrictions - Desktop builds for all platforms - GraphQL support - Import collections exported from Postman and Insomnia - Simple user friendly interface I built this because I love Insomnia but wanted a portable version that I could run in the…
2022 · restfox.dev · its alternatives →
- 10
- 11
- 12
- 13
- 14
- 15
Instantly generate openapi (OAS) 3.0.0 REST + GraphQL APIs
2019 · its alternatives →
- 16
- 17AJ
Hey HN, we’re building an open specification that lets agents discover and invoke APIs with natural language, built on the OpenAPI standard. agents.json clearly defines the contract between LLMs and API as a standard that's open, observable, and replicable. Here’s a walkthrough of how it works: https://youtu.be/kby2Wdt2Dtk?si=59xGCDy48Zzwr7ND. There’s 2 parts to this: 1. An agents.json file describes how to link API calls together into outcome-based tools for LLMs. This file sits alongside an OpenAPI file. 2. The agents.json SDK loads agents.json files as tools for an LLM that…
2025 · github.com · its alternatives →
- 18
Free online tool to test APIs and autogenerate documentation
2018 · its alternatives →
- 19
Generate and share OpenAPI specs with AI
2025 · api.dev · its alternatives →
- 20
- 21
- 22
- 23
- 24
Also compare
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →