Runtime configurable HTTP proxy designed for E2E testing, written in Go

In plain words

Martian is a Go library for building custom HTTP and HTTPS proxies that can be configured at runtime, making it useful for end-to-end testing scenarios. Developers can use it to create proxies tailored to their specific testing needs without building from scratch. The tool is open-source and available on GitHub, offering a flexible foundation for intercepting and modifying HTTP traffic during QA and development workflows.

written from the facts on this page · September 2026

• 
  Proxyman2019 · proxyman.com · ▲196

  An modern and intuitive HTTP debugging proxy

• 
  Proxy Tester by ScrapeOpsAug 2026 · scrapeops.io · ▲208

  Benchmark proxies for reliable, target-specific scraping

• 
  dingo - a Google DNS-over-HTTPS caching proxy in Go2016 · github.com · ▲75

  A DNS client in Go that supports Google DNS over HTTPS - pforemski/dingo

• 
  Inspect-HTTP-Proxy: a tool to pretty-print JSON requests/responses2025 · github.com · ▲8

  A simple Go-based HTTP proxy designed for detailed inspection of requests and responses. It logs traffic to the console with colorization, automatic decompression, and formatting for common content types, while remaining transparent to the client application. Ideal for debugging API interactions, understanding middleware behavior, or simply getting a clear view of HTTP traffic flow with jq-like pretty-printing & colorization of request/response. Automatically redacts parts of Authorization header to avoid token leakage.

• 
  ProxPi2022 · ▲13

  A Free, Open Source Proxy for your RESTful API's.

• 
  MockRTC – a mock peer and MitM proxy library for WebRTC2022 · github.com · ▲30

  Powerful friendly WebRTC mock peer & proxy. Contribute to httptoolkit/mockrtc development by creating an account on GitHub.

• 
  /dev/null▲489

  a social network for devs

  Dev tools · 3d ago · dev-null.sh

• 
  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 28d ago · github.com

• 
  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 26d ago · github.com

• 
  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 23d ago · openbot.run

• 
  Talanoa▲346

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 21d ago · talanoa.email

• 
  CoreSpeed▲332

  One MCP for everything your agents need: apps, memory, tools

  Dev tools · 29d ago · corespeed.io

• 
  Product Hunt LIVE 💬▲848

  Chat with some of the world’s most interesting makers

  Life & fun · 2015

• 
  Nebia Shower▲838

  Better shower, 70% less water

  Life & fun · 2015 · brondell.com

• MS
  My SSH server knows who you are▲836

  Life & fun · 2015 · blog.filippo.io

• 
  M▲714

  A personal assistant built inside Facebook Messenger

  Work · 2015 · facebook.com

• 
  Content Marketing Stack▲673

  A curated directory of content marketing resources

  Growth · 2015 · contentmarketingstack.co

• 
  Growth Hacking Tools▲650

  A curated collection of growth hacking tools

  Growth · 2015