Alternatives

Products that do what HTTP Client - API Tester for Chrome does

Test APIs right in your browser. No Postman needed.

1
Postman▲182
Postman is a powerful HTTP client to test REST API
2014
2
LambdaTest Chrome Extension▲191
Cross browser testing by taking full-page screenshots
2018
3RO
Restfox – Open source lightweight alternative to Postman▲758
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
4
HttpMaster▲82
Simple and practical tool for testing web apps & services
2018
5
Postman for Mac (Beta)▲368
Build, test, and document your APIs faster
2016
6
Testimonial Chrome Extension▲375
Collect testimonials from anywhere over the Internet
2023
7
Layer Client API▲239
Messaging, built for developers - now for web and desktop
2015
8
Simple Scraper▲556
Turn any website into an API in just a few seconds.
2019
9
req▲71
A lightweight, minimal yet powerful API testing tool
2022
10
Fetch Client▲78
REST client extension for VS code, alternative to Postman
2022
11CH
Chromeless – Headless Chrome Automation on AWS Lambda▲385
2017 · github.com
12
Browser Use Cloud▲379
Control the web with prompts (open source)
2025
13
Browser Use Skills▲230
Turn any website into a reliable API with 1 prompt
Dec 2025
14
Copycat▲120
Extension to test web apps without writing a line of code
2019
15
HTTPie for Terminal 2.6.0▲119
Making APIs simple and intuitive for makers around the world
2021
16PV
Posting v1 – The modern HTTP client that lives in your terminal▲184
Hi HN! I just released version 1.0 of Posting, an open source terminal application I've been working on which you might find useful if you work with, test, or develop HTTP APIs! Posting (https://github.com/darrenburns/posting) is an HTTP client, not unlike Postman and Insomnia. However, as a TUI application, it works over SSH and enables efficient keyboard-centric workflows. Your requests are stored locally in simple readable YAML files, meaning they're easy to read and version control. Some other features include: - "Jump mode" navigation - Environments/variables…
2024 · github.com
17
Thunder Client▲246
Rest API client for VS Code, lightweight Postman alternative
2021
18
WebTestIt▲101
A free lightweight IDE optimized for building UI web tests.
2020
19IB
I built an HTTP client that perfectly mimics Chrome 142▲39
BoringSSL and nghttp2. Matches JA3N, JA4, and JA4_R fingerprints. Supports HTTP/2, async/await, and works with Cloudflare-protected sites. Not trying to compete with curl_cffi - just a learning project that turned into something functional.
Nov 2025 · github.com
20AA
An API that takes a URL and returns a file with browser screenshots▲208
2025 · github.com
21
WebSlurp▲9
The Fastest Way to Test API Security Inside Chrome DevTools
Jul 2026 · webslurp.github.io
22
LambdaTest▲127
Ensure your web-apps work seamlessly across all browsers.
2018
23AA
Apicat – A Lightweight Offline Postman Alternative▲13
Apicat is the ultimate offline Postman alternative that stores your .http files locally. It’s Git-friendly, open-source, and highly compatible with Postman. Test APIs offline with this powerful free offline API client designed for developers who need a reliable local API testing tool.
Oct 2025 · apicat.com
24
Beam▲8
A HTTP client for developers built with Rust
Jun 2026 · github.com

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