Kargo automates promotion across dev, staging, and prod with approval gates and verification. Open source, built by the team behind Argo CD. Download now. Learn more →
Top 23 Devtool Open-Source Projects
-
One Claude Code session driving a browser through chrome-devtools-mcp works fine. Open a second terminal in the same repo and it stops:
-
AppSignal
Monitoring that respects your time & budget. APM, error tracking, and dashboards for modern web apps. Ten-minute setup, transparent flat pricing, and support from engineers who actually use the product.
-
Considering the harness needs to be running how else would this work?
Pretty easy these days with old school tools like tmux but more modern tooling like herdr [0] is really the path you'd want to take.
[0] https://herdr.dev/
-
Project mention: Show HN: BlitzGraph – Supabase for graphs, built for LLM agents | news.ycombinator.com | 2026-06-23
Hello! I would say about 50% of them were bugs, 25% were features/mechanisms I loved from the the other ones, and 25% trying to push a better way to model things, which is what I never got in none of them. Typedb would be close if entities could evolve and belong to multiple types, as well as if they focused on making it adapted for app creation, but it wasn't their priority. In surrealdb I opened several issues around enhancing the graph db part, add some topological ordering to mutations the way typedb does it and several other topics. The most recent ones are in surrealdb's repo: https://github.com/surrealdb/surrealdb/issues?q=is%3Aissue%2.... Half of them have been achieved but the other half remains. With blitzgraph I tried to take the best ideas and pracrices from each, keep the tradeoffs loww, and lean as hard as possible into being AI-agent-first
-
claude-skills
380 Claude Code skills & agent skills & plugins (30+ Agents, 70+ custom commands, 380+ skills, customizable references, scripts)for Claude Code, Codex, Gemini CLI, Cursor, and 8 more coding agents — engineering, marketing, product, compliance, C-level advisory, research, business operations, commercial & finance, and your daily productivity skills.
Project mention: I Built a Dual-Pool Adversarial Review System for AI Agents — And It Actually Works | dev.to | 2026-06-27I tested this on my own PR to alirezarezvani/claude-skills (18.7K stars):
-
MSW
-
-
Project mention: Docker Sandboxes – Disposable, isolated sandboxes for AI agents | news.ycombinator.com | 2026-08-09
-
Kargo
Stop Scripting Promotions. Start Shipping with Kargo. Kargo automates promotion across dev, staging, and prod with approval gates and verification. Open source, built by the team behind Argo CD. Download now.
-
-
✅Try out Qodo
-
openreplay
Session replay, cobrowsing and product analytics you can self-host. Best for reproducing issues and iterating on your product.
-
-
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.
-
-
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
-
hotel
🏩 A simple process manager for developers. Start apps from your browser and access them using local domains
-
-
-
I used this for a bit a few years ago but eventually needed something that was hard or impossible in k3sup and just went to using the k3s tools directly. My deployment script actually got simpler after removing k3sup.
Also, fun fact, k3sup is pronounced "ketchup" according to the README[0]
[0]: https://github.com/alexellis/k3sup/blob/master/README.md
-
-
Is this just devtools protocol wrapped by an MCP? I've been doing this with go-rod for two years...
https://github.com/go-rod/rod
-
-
FalkorDB
A super fast Graph Database uses GraphBLAS under the hood for its sparse adjacency matrix graph representation. Our goal is to provide the best Knowledge Graph for LLM (GraphRAG).
A couple of days ago I started to play with FalkorDB, an Open Source Graph Database. I already gave a presentation in Hebrew on how to use in general and specifically in Python. In a couple of hours I am going to give another one - this time in English - an intro to GraphDB. I'll use Rust for the programatic examples. It seems there is no client for it in Perl so it might be an interesting project to build one. The one in Python uses the Redis module for connectivity so I looked at the options to use Redis in Perl. MetaCPAN showed the Redis module as the first hit. Unfortunately that module did not have a commit for 3 years and there are many outstanding Issues and even PRs. So I posted about it both in the Perl Maven WhatsApp group and in the Telegram channel. Within seconds I was pointed towards Mojo::Redis and Redis::XS as alternatives.
-
-
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).
Devtools discussion
Devtools related posts
-
The VMs Powering Mobile Agents (Instinct, Claude Code)
-
How to find every Shopify store in a list of 10,000 domains
-
Which tools do Claude, Codex and Cursor choose? We measured 17k runs to find out
-
pezzo VS promplify-web - a user suggested alternative
2 projects | 2 Sep 2026 -
Show HN: MQLens – A Native MongoDB GUI (SSH, X.509, Kerberos, No Electron)
-
A11Y.md 2.0: what shipped when the numbers, not the author, decided
-
Launch HN: Vendo (YC S26) – Let users build features on top of your product
-
A note from our sponsor - Kargo
akuity.io | 13 Sep 2026
Index
What are some of the best open-source Devtool projects? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | chrome-devtools-mcp | 51,814 |
| 2 | herdr | 37,393 |
| 3 | surrealdb | 33,013 |
| 4 | claude-skills | 25,835 |
| 5 | msw | 18,202 |
| 6 | webpack-dashboard | 13,970 |
| 7 | E2B | 13,757 |
| 8 | redux-devtools-extension | 13,459 |
| 9 | pr-agent | 12,966 |
| 10 | openreplay | 12,830 |
| 11 | theatre | 12,600 |
| 12 | jsonhero-web | 10,860 |
| 13 | reactide | 10,502 |
| 14 | omni-tools | 10,205 |
| 15 | hotel | 10,005 |
| 16 | WebdriverIO | 9,835 |
| 17 | cosmos-js | 8,684 |
| 18 | k3sup | 7,425 |
| 19 | Eclipse Che | 7,168 |
| 20 | rod | 7,096 |
| 21 | MailCatcher | 6,777 |
| 22 | FalkorDB | 5,990 |
| 23 | clockwork | 5,950 |
Sponsored
Monitoring that respects your time & budget
APM, error tracking, and dashboards for modern web apps. Ten-minute setup, transparent flat pricing, and support from engineers who actually use the product.
www.appsignal.com