🛠️ All DevTools

[Database] Show HN: GoSMig – minimal, type-safe SQL migrations written in Go I built GoSMig for my own projects and open-sourced it in case it helps others. It’s a tiny generic library (no external deps except golang.org&#x2F;x&#x2F;term) for writing SQL migrations in Go with compile-time checks.<p>It supports transactional and non-transactional migrations, rollback, status, version, and a small CLI handler so you can ship your own migration binary.<p>Why another migrator?<p>- Minimal API, no DSL or file layout to learn<p>- Type-safe via Go generics<p>- Works with database&#x2F;sql and sqlx out of the box<p>- Should work with any db library (or wrapper) that implements some generic interfaces (see the &quot;Core Types&quot; section here <a href="https:&#x2F;&#x2F;github.com&#x2F;padurean&#x2F;gosmig?tab=readme-ov-file#core-types" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;padurean&#x2F;gosmig?tab=readme-ov-file#core-t...</a>)<p>- Tested with PostgreSQL, should work with any SQL RDBMS (MySQL, SQLite, MS SQL Server, ...)<p>Repo: <a href="https:&#x2F;&#x2F;github.com&#x2F;padurean&#x2F;gosmig" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;padurean&#x2F;gosmig</a><p>Docs &amp; examples: README + examples branch <a href="https:&#x2F;&#x2F;github.com&#x2F;padurean&#x2F;gosmig&#x2F;tree&#x2F;examples" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;padurean&#x2F;gosmig&#x2F;tree&#x2F;examples</a><p>Would love feedback: ergonomics, missing guardrails, API rough edges, and real-world gotchas, etc.

[Other] Show HN: ExprTk REPL – Explore math expressions in the browser with WebAssembly ExprTk compiled to WebAssembly lets you explore and evaluate math expressions instantly in your browser. Everything runs client-side at near-native speed.

[Other] Build your own database

[CLI Tool] Show HN: Clink – Bring your own CLI Agents, Ship instantly Clink lets you use the coding agents you already pay for (Claude Code, Codex CLI, Gemini CLI, Z.ai GLM) to build → live-preview → ship apps in an isolated container.<p>No token purchases, no extra cost for coding. Just link your existing Claude&#x2F;OpenAI&#x2F;Gemini account and start building and deploying instantly.<p>Why we built this:<p>Claude Code is our go-to for coding, but it lacked preview + deploy capabilities. We didn&#x27;t want to pay Lovable again just for that.<p>Different agents excel at different tasks - Claude Code for versatility, Codex for complex work, GLM for speed. We needed one platform to leverage them all.<p>CLI agents offer more freedom than traditional web builders. We wanted to unlock their full potential with proper dev tooling.<p>What it does:<p>• Prompt → Build → Live → Deploy - The fastest path from idea to live website. Deploy for free.<p>• BYO Subscription - Use your existing plans efficiently (Claude Code $20 = 10x Lovable $25 usage, GLM $3 = 3x Claude Code $20)<p>DEV Mode (Beta):<p>• Multi-stack support - Build with Node, Python, Go, Rust and deploy containers to public URLs instantly<p>• Repo imports - Upgrade and deploy your existing projects across any stack<p>Links:<p>• Clink: <a href="https:&#x2F;&#x2F;clink.new" rel="nofollow">https:&#x2F;&#x2F;clink.new</a><p>• OSS origin (Claudable, ~2.8k): <a href="https:&#x2F;&#x2F;github.com&#x2F;opactorai&#x2F;Claudable" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;opactorai&#x2F;Claudable</a><p>We&#x27;d love any feedback, bug reports, or stack requests - we iterate fast and read every comment.

[DevOps] Show HN: Katakate – Dozens of VMs per node for safe code exec I&#x27;ve built this to make it easy to host your own infra for lightweight VMs at large scale.<p>Intended for exec of AI-generated code, for CICD runners, or for off-chain AI DApps. Mainly to avoid Docker-in-Docker dangers and mess.<p>Super easy to use with CLI &#x2F; Python SDK, friendly to AI engs who usually don&#x27;t like to mess with VM orchestration and networking too much.<p>Defense-in-depth philosophy.<p>Would love to get feedback (and contributors: clear &amp; exciting roadmap!), thx

[Package Manager] Show HN: Interactive timelines from Markdown – Chronos Timeline Make time make sense. Create and share beautiful interactive timelines from plain text. Also available as an Obsidian plugin.<p>Developers can render Chronos timelines in their apps with chronos-timeline-md library on NPM

[API/SDK] Show HN: Apicat – A Lightweight Offline Postman Alternative Apicat is the ultimate offline Postman alternative that stores your .http files locally. It’s Git-friendly, open-source, and highly compatible with Postman. Test APIs offline with this powerful free offline API client designed for developers who need a reliable local API testing tool.

[Other] Show HN: Django Keel – 10 Years of Django Best Practices in One Template After a decade of shipping Django to production, I got tired of solving the same setup problems on every new project.<p>Environment-first settings. Sensible auth defaults. Structured logging. CI from day zero. Pre-commit hooks. Docker. Security hardening. Every project meant two days of boilerplate before writing business logic.<p>So I built Django Keel: a production-ready Django starter that eliminates the yak-shaving. GitHub: <a href="https:&#x2F;&#x2F;github.com&#x2F;CuriousLearner&#x2F;django-keel" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;CuriousLearner&#x2F;django-keel</a><p>*What you get*:<p>- 12-factor config with environment-based secrets - Production-hardened security defaults - Pre-wired linting, formatting, testing, pre-commit hooks - CI workflow ready to go - Clear project structure that scales - Documentation with real trade-offs explained<p>*Background*:<p>I maintained a popular cookiecutter template for years. Django Keel is what that should&#x27;ve been from the start—battle-tested patterns without the accumulated cruft.<p>*Who it&#x27;s for*:<p>Teams and solo builders shipping Django to production who want a strong baseline without tech debt. Feedback welcome on what works, what doesn&#x27;t, and what&#x27;s missing. Issues and PRs appreciated.

[Other] Servo aims to empower developers with a lightweight, high-performance alternative for embedding web technologies in applications.

[Other] Speech-to-text, text-to-speech, speaker diarization, speech enhancement, source separation, and VAD using next-gen Kaldi with onnxruntime without Internet connection. Support embedded systems, Android, iOS, HarmonyOS, Raspberry Pi, RISC-V, x86_64 servers, websocket server/client, support 12 programming languages

[Database] MiniOB is a compact database that assists developers in understanding the fundamental workings of a database.

[Monitoring/Observability] A fancy self-hosted monitoring tool

[Other] Show HN: I'm rewriting a web server written in Rust for speed and ease of use Hello! I got quite some feedback on a web server I&#x27;m building, so I&#x27;m rewriting the server to be faster and easier to use.<p>I (and maybe some other contributors?) have optimized the web server performance, especially for static file serving and reverse proxying (the last use case I optimized for very recently).<p>I also picked a different configuration format and specification, what I believe is easier to write.<p>Automatic TLS is also enabled by default out of the box, you don&#x27;t need to even enable it manually, like it was in the original server I was building.<p>Yesterday, I released the first release candidate of my web server&#x27;s rewrite. I&#x27;m so excited for this. I have even seen some serving websites with the rewritten web server, even if the rewrite was in beta.<p>Any feedback is welcome!

[Testing] Agentic AI for Security & Quality Testing + Auto-Fixes Test and Auto-Fix security and quality issues in your apps. PerfAI is an AppSec platform that saves dev teams 100's of hours in manual testing and code-fixing, by writing & executing 1,000's of tests against 100+ categories — then auto-fixing your code.

[DevOps] Lovable for web automations Director AI gets stuff done for you on the web using its own browser. With just a prompt, you can build and deploy workflows that automate any online task.

[Other] Backend operations platform for amazon & walmart sellers Solve your backend operations challenges with IntegriSupply's comprehensive platform built for Amazon and Walmart sellers. Streamline supplier management, inventory tracking, and business operations for 1-2 person teams.

[CLI Tool] Fine-tuned AI for conventional commit messages. GIT-AI is an intelligent CLI tool that auto-generates conventional commit compliant messages from your staged changes. Smart branch detection and context-aware prompts ensure meaningful commits every time.

[Other] Export & restore your ChatGPT chats in full context ContextCarry is a Chrome extension that saves and restores your ChatGPT conversations across formats like PDF, HTML, JSON, Markdown, and more. Whether you're coding, writing, or researching — your AI chats are always safe, shareable, and searchable.

[Other] Simplifying algorithmic trading for everyone with AI Tradlgo - India’s top algo trading app. Fast backtesting, paper & live trading, and a strategy marketplace.

[Other] Building a message queue with only two UNIX signals