TypeScript Devtools

Open-source TypeScript projects categorized as Devtools

Top 23 TypeScript Devtool Projects

  1. msw

    Industry standard API mocking for JavaScript.

    Project mention: Implementing Optimistic UI with Remix | dev.to | 2025-06-01

    In this post, we'll dive into implementing Optimistic UI in a Remix.run application, combined with Mock Service Worker(MSW) for robust API mocking and intercepting API requests into our application. Essential for development and testing. It allows us to intercept network requests and define mock responses right in the browser, simulating API behavior without needing a real backend running. This is invaluable for rapid development and testing edge cases like API failures.

  2. InfluxDB

    InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

    InfluxDB logo
  3. repomix

    📦 Repomix is a powerful tool that packs your entire repository into a single, AI-friendly file. Perfect for when you need to feed your codebase to Large Language Models (LLMs) or other AI tools like Claude, ChatGPT, DeepSeek, Perplexity, Gemini, Gemma, Llama, Grok, and more.

    Project mention: Repomix – Pack your codebase into AI-friendly formats | news.ycombinator.com | 2025-05-24
  4. theatre

    Motion design editor for the web

    Project mention: Top 10 JavaScript Animation Libraries in 2025 | dev.to | 2025-03-10

    Check Theatre.js 🔥

  5. openreplay

    Session replay, cobrowsing and product analytics you can self-host. Ideal for reproducing issues and iterating on your product.

  6. 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. 🚀. Built with 💜 by the Trigger.dev team.

    Project mention: Show HN: JSON For You – Visualize JSON in graph or table views | news.ycombinator.com | 2024-09-24

    i am using https://jsonhero.io/ for a time and happy with it. but i will definitely check this out too.

  7. WebdriverIO

    Next-gen browser and mobile automation test framework for Node.js

    Project mention: Release Radar · August 2024: Major updates from the open source community | dev.to | 2024-09-05

    It's important to test our code to ensure it works the way we intend. WebdriverIO is a test automation framework, for e2e, unit, and component testing in the browser. It's designed for Node.js and provides support for BDD/TDD test frameworks, and can be run locally or in the cloud. The newest major release has lots of breaking changes, and a bunch of new features. Testers can use new commands, define a custom hostname for component tests, and there's support for fake timers. Check out all the major and breaking changes in the changelog.

  8. cosmos-js

    Sandbox for developing and testing UI components in isolation

  9. SaaSHub

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

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  10. Eclipse Che

    Kubernetes based Cloud Development Environments for Enterprise Teams

  11. openapi-devtools

    Browser extension that generates API specs for any app or website

    Project mention: Automated Documentation for APIs | dev.to | 2025-04-07

    The release is split into two phases. The first has happened and is the release of standalone client-based tools and the algorithm that powers the entire system. These tools let users generate OpenAPI specifications for any API, internal or external. There is a desktop application with a proxy that can easily be toggled to capture network traffic on a local port that then becomes an OpenAPI specification in real time. There is also a browser extension in the spirit of OpenAPI DevTools, and a website that lets users upload HAR files directly. There is also a command line tool.

  12. compodoc

    :notebook_with_decorative_cover: The missing documentation tool for your Angular, Nest & Stencil application

    Project mention: Générer des documentations pour une application Angular, Nest JS, Vue JS, Node JS | dev.to | 2024-07-20

    Découvrez la page officielle de Compodoc !

  13. 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!

    Project mention: Show HN: OmniTools – Self-Hosted Open-Source Swiss Army Knife for Everyday Tasks | news.ycombinator.com | 2025-03-30

    Which features depend on more than static hosting? I see the ffmpeg tools uses client-side wasm build.

    https://github.com/iib0011/omni-tools/blob/main/src/pages/to...

  14. devtools-frontend

    The Chrome DevTools UI

    Project mention: CodeMirror: Extensible code editor component for the web | news.ycombinator.com | 2024-07-11

    DevTools is open-source!

    https://github.com/ChromeDevTools/devtools-frontend/blob/mai...

  15. lightproxy

    💎 Cross platform Web debugging proxy

  16. pezzo

    🕹️ Open-source, developer-first LLMOps platform designed to streamline prompt design, version management, instant delivery, collaboration, troubleshooting, observability and more.

    Project mention: Show HN: PromptDoggy – Prompt Management for Product and Engineering Teams | news.ycombinator.com | 2024-08-22

    - https://github.com/pezzolabs/pezzo

  17. react-render-tracker

    React render tracker – a tool to discover performance issues related to unintentional re-renders and unmounts

  18. walletconnect-monorepo

    WalletConnect Monorepo

  19. apollo-client-devtools

    Apollo Client browser developer tools.

  20. devtools-x

    Collection of offline first developer utilities available as non-electron desktop application. all in one place, cross-platform, 10MB app!

    Project mention: DevHub.app – Developer Utilities for macOS | news.ycombinator.com | 2024-09-06

    Impressive! But sadly closed source is a big limiting factor for me. I've been using the similar `devtools-x` for a couple of years now (https://github.com/fosslife/devtools-x) which hosts a bit of a smaller featureset but is still in active development. Nice work nonetheless!

  21. graphql-config

    One configuration for all your GraphQL tools (supported by most tools, editors & IDEs)

  22. replay

    Library that provides an API to replay and stringify recordings created using Chrome DevTools Recorder (by puppeteer)

  23. e2b-cookbook

    Examples of using E2B

    Project mention: Show HN: OpenAI's o1 building and running ML model with code interpreter | news.ycombinator.com | 2024-09-15
  24. triplex

    Build the 2D and 3D web without coding. Your visual workspace for React / Three Fiber.

    Project mention: Show HN: Triplex, a visual workspace for React / Three Fiber | news.ycombinator.com | 2025-05-12
  25. react-router-devtools

    Debug your apps, find hydration errors, trace your network and more in your react-router app with these devtools

    Project mention: Show HN: React router v7 developer tools | news.ycombinator.com | 2025-04-04

    https://github.com/forge-42/react-router-devtools

  26. SaaSHub

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

    SaaSHub logo
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).

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Index

What are some of the best open-source Devtool projects in TypeScript? This list will help you:

# Project Stars
1 msw 16,846
2 repomix 17,077
3 theatre 11,767
4 openreplay 10,191
5 jsonhero-web 10,100
6 WebdriverIO 9,519
7 cosmos-js 8,495
8 Eclipse Che 7,053
9 openapi-devtools 4,210
10 compodoc 4,062
11 omni-tools 3,758
12 devtools-frontend 3,390
13 lightproxy 3,140
14 pezzo 2,932
15 react-render-tracker 2,384
16 walletconnect-monorepo 1,552
17 apollo-client-devtools 1,514
18 devtools-x 1,264
19 graphql-config 1,191
20 replay 1,177
21 e2b-cookbook 1,004
22 triplex 919
23 react-router-devtools 902

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