🛠️ All DevTools

[Code Quality] Show HN: Framework to create linters for Python, YAML, TOML, JSON Hi, this is a Python framework I have created to make my life a little easier when creating custom linting rules.<p>Key features:<p>- Quick to use (~20 LOC to create a functioning linter&#x2F;checker)<p>- Works with different file formats (as in the description)<p>- Supports multiple ignore&#x2F;noqa directives (per-line ignores, range ignores, whole file, rules choice during runs)<p>- Single check can span all elements of the file or even all files<p>- Works directly with Python&#x27;s AST<p>- Tutorials and API reference to make users life easier<p>All in all seems to be quite functional for my private (yet) linters, so I decided to make it into a FOSS project.<p>Have fun, would love to hear your feedback and ideas regarding it!

[Other] Show HN: My OSS P2P file transfer tool for learning Next.js (as a C++ dev) Hey HN,<p>I&#x27;m a C++ algorithms engineer, and today I&#x27;d like to share my first full-stack web project: PrivyDrop.<p>This project was born from two ideas:<p>First, I wanted to solve a daily annoyance of mine: I needed a simple, AirDrop-like way to send text, links, or screenshots between my phone and PC. I tried many tools, but they either required me to sign up, had various limitations, or uploaded my data to their servers, which I was never comfortable with.<p>Second, this was a personal experiment. Last year, with all the talk about &quot;AI replacing programmers,&quot; I got curious. As a developer with no web background, I wanted to see how long it would take to learn full-stack development from scratch (an area I&#x27;m really interested in) and build a complete application, using AI as my primary coding partner and mentor.<p>PrivyDrop is the result of that learning and experiment.<p>It&#x27;s a peer-to-peer (P2P) file-sharing tool based on WebRTC. Its core principle is that *your data belongs only to you*: all files and text are transferred directly between your browser and the recipient&#x27;s, fully end-to-end encrypted, without ever passing through an intermediate server.<p>*Here are some of its key features:*<p>* Completely free and open-source, with no ads. * No sign-up or installation required—just open your browser. * Direct P2P connection for privacy, security, and speed. * No limits on file size or type. * Support for entire folder transfers. * Built-in resumable transfers.<p>The whole process has been a fantastic learning journey. I&#x27;m sharing it now in the hope that it can solve the same pain point for others. I&#x27;m really eager to hear any feedback, ideas, or even harsh criticism from the HN community!<p>* *Live Demo:* <a href="https:&#x2F;&#x2F;www.privydrop.app" rel="nofollow">https:&#x2F;&#x2F;www.privydrop.app</a> * *GitHub Repo:* <a href="https:&#x2F;&#x2F;github.com&#x2F;david-bai00&#x2F;PrivyDrop" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;david-bai00&#x2F;PrivyDrop</a><p>Thanks, everyone!

[Other] Show HN: Rebuilding GPT2 inference in ~500 lines of (commented) code

[API/SDK] Show HN: Mixing Deterministic Codegen with LLM Codegen for Client SDKs Hi HN, I’m Patrick. Elias, Kevin, and I are building Sideko (<a href="https:&#x2F;&#x2F;sideko.dev" rel="nofollow">https:&#x2F;&#x2F;sideko.dev</a>), a new type of code generator for building and maintaining API client SDKs from OpenAPI specs.<p>Our approach differs significantly from traditional SDK generators in that we use structured pattern matching queries to create and update the code. Other SDK generators use templates, which overwrite custom changes and produce code that looks machine generated.<p>We’ve mixed in LLM codegen by creating this workflow: Run deterministic codegen to establish the SDK structure. Let LLMs enhance specific components where adaptability adds value and include agent rules files that enforce consistency and correctness with type checking and integration tests against mock servers. The system will retain the LLM edits, while the rest of the SDK is automatically maintained by the deterministic generator (keeping it in sync with the API). LLMs can edit most the files (see python rules and typescript rules).<p>You can try it out from your terminal: Install: npm install -g @sideko&#x2F;cli Login: sideko login Initialize: sideko sdk init Prompt: “Add a new function that…”<p>Check out the repo for more details: <a href="https:&#x2F;&#x2F;github.com&#x2F;Sideko-Inc&#x2F;sideko" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;Sideko-Inc&#x2F;sideko</a> We’d love to hear your thoughts!

[Other] Open Source Alternative to NotebookLM / Perplexity, connected to external sources such as Search Engines, Slack, Linear, Jira, ClickUp, Confluence, Notion, YouTube, GitHub, Discord and more. Join our discord:https://discord.gg/ejRNvftDp9

[Other] Show HN: Turn Markdown into React/Svelte/Vue UI at runtime, zero build step

[Other] Durable execution with minimal effort Enql - Enterprise-grade reliability for event-driven applications. Build robust, scalable systems with a single API call. Bring durable execution to your applications easily and focus more of your time on the business logic.

[Code Quality] Dev-five-git/devup-ui: jsx zero-runtime ui styling library ⚡ Zero-runtime – all styles extracted at build time 🗂️ Deduplication – no repeated CSS, thanks to caching 🌍 Responsive & theming support out of the box 💻 Works in TSX/JSX directly – no separate style files needed

[Other] A place to know latest update of Claude Code Transform your development workflow with Claude Code, the most advanced AI coding assistant powered by Claude Opus 4.1 and Claude Sonnet 4.

[Other] The agentic code review experience. Graphite Chat is your AI-powered reviewer, built right into every pull request. It has full context on your entire codebase to explain diffs, suggest improvements, generate tests, or fix failing CI—and commit the changes instantly. Free while in beta.

[Other] Split SaaS revenue with partners, sell without headaches Smooth payments for SaaS 🤝 Split revenue with partners anywhere. 🌍 Get paid in 80+ currencies, 100+ countries & stablecoins. 🤖 AI assistant that knows your business data. 💳 Sell with subscriptions & one-time payments without Tax headaches.

[Other] 10x your vibe-coding workflow writing visual annotations Visual annotation tool for AI coding agents like Claude Code, Cursor, GitHub Copilot, and Windsurf. Drop feedbacks on your localhost website and let AI implement all changes automatically via the companion MCP. Free chrome extension for designers / developers.

[DevOps] The AI Copilot for Linux & DevOps Otium is the AI DevOps engineer for everyone. Type a task in natural language and Otium generates a safe plan, executes it on your server, explains results, and logs every step - making Linux administration faster, safer, and more accessible.

[Other] Enterprise github repository management & security Professional GitHub repository monitoring, security scanning, and compliance management. Real-time vulnerability detection, dependency tracking, and automated reporting for enterprise teams.

[Other] Scheduled PostgresSQL backups and PostgreSQL monitoring tool Postgresus is a free, open source and self-hosted tool to backup and monitor PostgreSQL. Make backups with different storages and notifications about progress. Postgresus can be installed viash script, Docker or Docker Compose file

[Other] Welcome to the first official Launch of Glyph Welcome to the official launch of Glyph! Glyph is a powerful tool for the professional cloud engineer or architect; allowing clear and complete visualization and navigation of your cloud resources from a highly responsive and secure platform.

[Testing] AI-powered QA that helps you release faster with confidence. Qadence is a platform-enabled QA-as-a-Service that blends AI-driven test automation with managed expertise. Unlike tools that require setup or services that rely on manual testers, Qadence delivers continuous, adaptive coverage out-of-the-box.

[Other] Gonzo: A Go-based TUI for log analysis (OpenTelemetry/OTLP support)

[Other] Google to require developer verification to install and sideload Android apps

[Other] Show HN: Stagewise – frontend coding agent for real codebases Hey HN, we&#x27;re Glenn and Julian, and we&#x27;re building stagewise (<a href="https:&#x2F;&#x2F;stagewise.io">https:&#x2F;&#x2F;stagewise.io</a>), a frontend coding agent that inside your app’s dev mode and that makes changes in your local codebase.<p>We’re compatible with any framework and any component library. Think of it like a v0 of Lovable that works locally and with any existing codebase.<p>You can spawn the agent into locally running web apps in dev mode with `npx stagewise` from the project root. The agent lets you then click on HTML Elements in your app, enter prompts like &#x27;increase the height here&#x27; and will implement the changes in your source code.<p>Before stagewise, we were building a vertical SaaS for logistics from scratch and loved using prototyping tools like v0 or lovable to get to the first version. But when switching from v0&#x2F; lovable to Cursor for local development, we felt like the frontend magic was gone. So, we decided to build stagewise to bring that same magic to local development.<p>The first version of stagewise just forwarded a prompt with browser context to existing IDEs and agents (Cursor, Cline, ..) and went viral on X after we open sourced it. However, the APIs of existing coding agents were very limiting, so we figured that building our own agent would unlock the full potential of stagewise.<p>Since our last Show HN (<a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=44798553">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=44798553</a>), we launched a few very important features and changes: You now have a proprietary chat history with the agent, an undo button to revert changes, and we increased the amount of free credits AND reduced the pricing by 50%. We made a video about all these changes, showing you how stagewise works: <a href="https:&#x2F;&#x2F;x.com&#x2F;goetzejulian&#x2F;status&#x2F;1959835222712955140&#x2F;video&#x2F;1" rel="nofollow">https:&#x2F;&#x2F;x.com&#x2F;goetzejulian&#x2F;status&#x2F;1959835222712955140&#x2F;video&#x2F;...</a>.<p>So far, we&#x27;ve seen great adoption from non-technical users who wanted to continue building their lovable prototype locally. We personally use the agent almost daily to make changes to our landing page and to build the UI of new features on our console (<a href="https:&#x2F;&#x2F;console.stagewise.io">https:&#x2F;&#x2F;console.stagewise.io</a>).<p>If you have an app running in dev mode, simply `cd` into the app directory and run `npx stagewise` - the agent should appear, ready to play with.<p>We&#x27;re very excited to hear your feedback!