Stop vibe-debugging. Every exception, every backtrace, grouped so you see patterns, not noise. Learn more â
Top 23 TypeScript Devtool Projects
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Project mention: I scored the tool descriptions of Chrome DevTools MCP and Playwright MCP. Both rarely say when to use a tool | dev.to | 2026-10-12
Update: I suggested rewrites upstream in microsoft/playwright-mcp#1788 and ChromeDevTools/chrome-devtools-mcp#3026. A Playwright maintainer closed that one, asking for a reproducible trajectory against a frontier model rather than a score. In #3026, after the test above, I withdrew the claim that the short descriptions confuse models.
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AppSignal
AppSignal knows why the f*#k it crashed. Stop vibe-debugging. Every exception, every backtrace, grouped so you see patterns, not noise.
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openreplay
Session replay, cobrowsing and product analytics you can self-host. Best for reproducing issues and iterating on your product.
Project mention: Replayowl VS openreplay - a user suggested alternative | libhunt.com/r/replayowl | 2026-10-15Both are open source, self-hosted session replay. OpenReplay is the larger, more established suite; Replayowl only does replay, with a small dependency-free recorder and a server that runs as one Cloudflare Worker or one Node process.
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jsonhero-web
JSON Hero is an open-source, beautiful JSON explorer for the web that lets you browse, search and navigate your JSON files at speed. đ. Built with đ by the Trigger.dev team.
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omni-tools
Self-hosted collection of powerful web-based tools for everyday tasks. No ads, no tracking, just fast, accessible utilities right from your browser!
Una bastante completa y variada: Omni Tools
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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compodoc
:notebook_with_decorative_cover: The missing documentation tool for your Angular, Nest & Stencil application
Project mention: Building a Portfolio That Actually Demonstrates Enterprise Skills - Part 2 | dev.to | 2026-01-01Compodoc generates API documentation from TSDoc comments in the code. It targets core services and feature modules, producing documentation that includes dependency graphs, method signatures, and cross-references. The configuration excludes test and story files to keep the documentation focused on production code.
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pezzo
đšī¸ Open-source, developer-first LLMOps platform designed to streamline prompt design, version management, instant delivery, collaboration, troubleshooting, observability and more.
Project mention: pezzo VS promplify-web - a user suggested alternative | libhunt.com/r/pezzo | 2026-09-02 -
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react-render-tracker
React render tracker â a tool to discover performance issues related to unintentional re-renders and unmounts
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pr-lens
Review code 100X faster. Lens draws every PR as animated architecture and data-flow walkthroughs, inside the pull request itself. Use it as a GitHub App, GitHub Action, CLI, or a Skill for your coding agent
Project mention: Show HN: I stopped reading my agent's diffs, so I made every PR draw itself | news.ycombinator.com | 2026-10-05 -
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devtools-x
Collection of offline first developer utilities available as non-electron desktop application. all in one place, cross-platform, 10MB app!
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dev3000
Captures your web app's complete development timeline - server logs, browser events, console messages, network requests, and automatic screenshots - in a unified, timestamped feed for AI debugging.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
TypeScript Devtools discussion
TypeScript Devtools related posts
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How I score the health of a Node.js API in one command
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Why our Kubernetes UI installer used to be 500 MB (and isn't anymore)
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What it takes to trust an open-source app that updates itself
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Which tools do Claude, Codex and Cursor choose? We measured 17k runs to find out
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pezzo VS promplify-web - a user suggested alternative
2 projects | 2 Sep 2026 -
Show HN: MQLens â A Native MongoDB GUI (SSH, X.509, Kerberos, No Electron)
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A note from our sponsor - AppSignal
www.appsignal.com | 16 Oct 2026
Index
What are some of the best open-source Devtool projects in TypeScript? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | chrome-devtools-mcp | 53,281 |
| 2 | msw | 18,274 |
| 3 | openreplay | 12,966 |
| 4 | theatre | 12,600 |
| 5 | jsonhero-web | 10,881 |
| 6 | omni-tools | 10,309 |
| 7 | WebdriverIO | 9,844 |
| 8 | cosmos-js | 8,686 |
| 9 | Eclipse Che | 7,169 |
| 10 | openapi-devtools | 4,305 |
| 11 | compodoc | 4,119 |
| 12 | devtools-frontend | 4,070 |
| 13 | pezzo | 3,279 |
| 14 | lightproxy | 3,218 |
| 15 | react-render-tracker | 2,401 |
| 16 | pr-lens | 1,979 |
| 17 | repo2txt | 1,836 |
| 18 | rnx-kit | 1,738 |
| 19 | walletconnect-monorepo | 1,691 |
| 20 | devtools-x | 1,537 |
| 21 | profiler | 1,539 |
| 22 | apollo-client-devtools | 1,528 |
| 23 | dev3000 | 1,418 |
Sponsored
AppSignal knows why the f*#k it crashed.
Stop vibe-debugging. Every exception, every backtrace, grouped so you see patterns, not noise.
www.appsignal.com