Top devtools Startups

Show HN: Rocky – Rust SQL engine with branches, replay, column lineage

Show HN: LangAlpha – what if Claude Code was built for Wall Street?

Show HN: Helix – open-source self-healing back end for production crashes

Show HN: OQP – A verification protocol for AI agents

Show HN: Finalrun – Spec-driven testing using English and vision for mobile apps

Show HN: FusionCore: ROS 2 sensor fusion that outperforms robot_localization

Show HN: 500k+ events/sec transformations for ClickHouse ingestion

Show HN: DAC – open-source dashboard as code tool for agents and humans

Show HN: Fabro – open-source dark software factory

Show HN: Broccoli, one shot coding agent on the cloud

Show HN: I Built SwiftUI but for macOS MDM

Show HN: GhostBox – Borrow a disposable little machine from the Global Free Tier

Show HN: I built an open source multi-agent harness in Go

Show HN: Pollen – distributed WASM runtime, no control plane, single binary

Show HN: Modeleon – Python DSL that compiles to live Excel formulas

Show HN: Clone, a small Rust VMM, forks VMs in under 20ms via CoW

Show HN: fixiproject.org – minimalist web tools

Show HN: Nanopm – PM automation for Claude Code (audit → strategy → roadmap)

Show HN: MCPfinder – An MCP server that finds and installs other MCP servers

Show HN: Origin – Git blame for AI agents (track which AI wrote every line)

Show HN: Agent that refuses to run commands without human approval

Show HN: I fixed FFmpeg's subtitle conversion (the bug from 2014)

Show HN: Open Passkey – open-source passkey auth with free "backendless" host

AWS just launched a direct competitor to my SaaS. What I did in the first 6 hours.

Show HN: Qumulator – quantum circuit simulator, 1000 qubits, no GPU

Show HN: GeoTraceroute – Traceroutes on a 3D globe and submarine cables

Show HN: I'm running parallel Pi agents on a local sandbox

Show HN: Tera – A Compiler‑Native UI Framework with Shared Runtime/AI Context

Show HN: EvalsHub: Your AI is failing in production and you don't know it

Show HN: ClusterdOS – Kubernetes without the platform team

Soft launch of open-source code platform for government

Show HN: I built a self-hosted Fly.io engine using Go and Firecracker

Show HN: Generative UI Library for React

Show HN: Modular – drop AI features into your app with two function calls

Show HN: Lint-AI by RooAGI, a Rust CLI for AI Doc Retrieval

Show HN: Git why – log your agent reasoning trace along your code

Show HN: Mo – checks GitHub PRs against decisions approved in Slack

Show HN: Pu.sh – a full coding-agent harness in 400 lines of shell

Show HN: Lexplain – AI-powered Linux kernel change explanations

Show HN: WhiskeySour – A 10x faster drop-in replacement for BeautifulSoup

Show HN: 8d – Agent-Native Version Control, where Git breaks

Show HN: Git Push No-Mistakes

Show HN: Winpodx – run Windows apps on Linux as native windows

Show HN: T4 – a versioned datastore with branching and time-travel (S3-backed)

Show HN: Stream iOS Simulators to a Browser Window

Show HN: Code on the Go, an IDE for Android with On-Device Debugging (GPLv3)

Show HN: Run Claude Code autonomously inside your Docker Compose stack (OSS)

Show HN: Pixel-Perfect MaterialX in Blender and Three.js

Show HN: High perfomance database - Graph, vector, array, columnar, KV

Show HN: Claudraband – Claude Code for the Power User