🛠️ All DevTools

[Other] Show HN: I made an Animal Crossing style letter editor I made a simple open-source letter editor inspired by Animal Crossing NH. Took me forever to look over each card, but I&#x27;m quite pleased with how it turned out. You can even click the bottle in the bottom right to see a random letter design shared by other users! Now to see how long it stays up...<p>Check out the source code here: <a href="https:&#x2F;&#x2F;github.com&#x2F;IdreesInc&#x2F;Animal-Crossing-Letter-Generator" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;IdreesInc&#x2F;Animal-Crossing-Letter-Generato...</a>

[CLI Tool] Bring Your Own Agent to Zed – Featuring Gemini CLI <a href="https:&#x2F;&#x2F;developers.googleblog.com&#x2F;pt-br&#x2F;gemini-cli-is-now-integrated-into-zed&#x2F;" rel="nofollow">https:&#x2F;&#x2F;developers.googleblog.com&#x2F;pt-br&#x2F;gemini-cli-is-now-in...</a>

[Other] Running our Docker registry on-prem with Harbor

[Other] ASCIIFlow

[CLI Tool] A Commander for modern Go CLI interactions

[DevOps] Secure and fast microVMs for serverless computing.

[CLI Tool] The new Windows Terminal and the original Windows console host, all in the same place!

[API/SDK] Python package for Real-time, Local Speech-to-Text and Speaker Diarization. FastAPI Server & Web Interface

[Other] Show HN: Auto-Match – How We Built Receipt-to-Transaction Matching (Open Source) I’ve been working on automating bookkeeping tasks, and one big pain point was manually reconciling receipts with bank transactions. We built a system that runs in the background, parses receipts (including Gmail), suggests matches, and learns from confirmations to auto-match over time.<p>It&#x27;s built into Midday and fully open-source.<p>Let me know if you have any questions!

[Other] Show HN: Envoy – Command Logger Envoy is a lightweight, background utility that logs your terminal commands. It&#x27;s designed to be a simple and unobtrusive way to keep a history of your shell usage, which can be useful for debugging, tracking work, or just remembering what you did.

[Other] Terminal sessions you can bookmark

[Other] Visualize Any Codebase Instantly Understand any code architecture in minutes. Codalogy analyzes your codebase, breaks it into clear components, and maps functionality & dependencies—so you can skip the digging and simply explore your code visually, coffee in hand.

[Other] Let your AI actually get things done for you Rube is a universal MCP that enables you to take actions across 600+ applications from within your AI chat, be it Cursor, Claude, VS Code, etc. It manages authentication and tool selection seamlessly and securely within the chat.

[Other] Build, deploy, and monetize LangChain agents in under 5 min Build, deploy, and monetize production-ready LangChain agents in under 5 minutes. AI Native Agent platform with instant revenue generation, beginner-friendly prompt-to-agent creation, and advanced IDE for developers. Start earning from your AI agents today.

[Other] Premium automation templates A marketplace for premium n8n automation templates designed to help creators and businesses save time and scale faster. Keep 100% of what you earn, zero Commission!

[Other] Show HN: Regolith – Regex library that prevents ReDoS CVEs in TypeScript I wanted a safer alternative to RegExp for TypeScript that uses a linear-time engine, so I built Regolith.<p>Why: Many CVEs happen because TypeScript libraries are vulnerable to Regular Expression Denial of Service attacks. I learned about this problem while doing undergraduate research and found that languages like Rust have built-in protection but languages like JavaScript, TypeScript, and Python do not. This library attempts to mitigate these vulnerabilities for TypeScript and JavaScript.<p>How: Regolith uses Rust&#x27;s Regex library under the hood to prevent ReDoS attacks. The Rust Regex library implements a linear-time Regex engine that guarantees linear complexity for execution. A ReDoS attack occurs when a malicious input is provided that causes a normal Regex engine to check for a matching string in too many overlapping configurations. This causes the engine to take an extremely long time to compute the Regex, which could cause latency or downtime for a service. By designing the engine to take at most a linear amount of time, we can prevent these attacks at the library level and have software inherit these safety properties.<p>I&#x27;m really fascinated by making programming languages safer and I would love to hear any feedback on how to improve this project. I&#x27;ll try to answer all questions posted in the comments.<p>Thanks! - Jake Roggenbuck

[Other] GNU Artanis – A fast web application framework for Scheme

[IDE/Editor] Show HN: First background agents in Jetbrains IDEs [video] TLDR: made the first background coding agent that has an isolated workspace and runs locally<p>Howdy - I’m Kevin, co-founder of Firebender, and we built the first background coding agent in android studio &#x2F; Jetbrains!<p>Why not just use Cursor background agents or OpenAI Codex?<p>Both of these require setting up a cloud container and cloning your existing developer environment, and maintaining it. Then when you want to iterate on changes as AI inevitably makes a mistake, you either throw away the work, or have to pull down the branch and clean it up. This feels really clunky. With Firebender, background agents run locally in a lightweight git worktree&#x2F;IDE tab. This means when the agent is done, you can easily clean up the changes and run code with a few clicks.<p>Under the hood, the agent behaves similarly to claude code (didn’t want to reinvent the wheel), but also leverages all of the hooks into IntelliJ sdk like go-to-definition, find usages, auto-imports for accuracy, and it gives a cleaner visual UI for reviewing changes and merging them. You can use any frontier model like gpt-5&#x2F;sonnet-4 as the base.<p>We’ve had to do quite a bit of reverse engineering of the IntelliJ codebase to cleanly set up and manage the isolated environment, and I think you’ll appreciate the simple UX of hitting cmd+enter to run a background agent anywhere.<p>get started docs: <a href="https:&#x2F;&#x2F;docs.firebender.com&#x2F;get-started&#x2F;background-agents">https:&#x2F;&#x2F;docs.firebender.com&#x2F;get-started&#x2F;background-agents</a><p>download the plugin: <a href="https:&#x2F;&#x2F;firebender.com">https:&#x2F;&#x2F;firebender.com</a><p>Would love to get your feedback to help us improve the tool for you! Thanks!

[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!