🛠️ All DevTools

[Other] Share GitHub repos links that work for days, not forever TempRepo lets you create temporary links to GitHub repositories that automatically expire after a set time (1 day to 1 month). Perfect for sharing code with clients, during interviews, or for limited-time collaborations without giving permanent access.

[Other] Build, test , sell AI agents local, fast, and private AI Agent Market lets anyone create, customize, and chat with AI agents locally and without API limits. Choose models, add tools, and publish to the marketplace. Perfect for devs, startups, and creators who want freedom, speed, and privacy.

[Other] Show HN: Subway Surfers in Your Terminal Tired of losing focus when waiting for codegen to finish? Now you can enhance your concentration by integrating subway surfers into your workflow.<p>brew tap evanreilly&#x2F;subway-surfers brew install subway-surfers Usage subway-surfers

[Database] Show HN: SerenDB – A Neon PostgreSQL fork optimized for AI agent workloads Show HN: SerenDB – Neon PostgreSQL fork optimized for AI agent workloads<p>We forked Neon to make database operations faster and safer for AI agents. The goal is to enable instant experimentation with production data and catch prompt injection attacks before they hit your DB. The open-source repo is at <a href="https:&#x2F;&#x2F;github.com&#x2F;serenorg&#x2F;serendb" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;serenorg&#x2F;serendb</a><p>The coolest current features are:<p>1. Time-travel queries: Query your database as it existed at any timestamp. SELECT * FROM orders AS OF TIMESTAMP &#x27;2024-01-15 14:30:00&#x27;. Essential for debugging agent decisions and auditing what data an agent saw.<p>2. Scale-To-Zero with pgvector: Built-in vector embeddings that sleep when idle. Pay nothing for dormant agent databases, auto-scale to 16 vCPU when needed.<p>The coolest features in development are:<p>1. Prompt injection detection: Fingerprinting and context-aware policies to catch injection attempts before they reach your data. We&#x27;re extending Postgres&#x27;s security model to understand AI-specific attack patterns.<p>2. 100ms branch creation: Clone your entire production database in 100ms (vs Neon&#x27;s 500ms). Enables branch-per-agent patterns and instant rollback. Great for faster testing of multiple prompt variations on real data.<p>This is early - we&#x27;re working on the hosted service now.<p>Technical folks: curious if anyone else is hitting the &quot;how do I safely test my agent on prod data&quot; problem. Happy to answer questions about our updates to the branching architecture or our proposed context security approaches.<p>Website: <a href="https:&#x2F;&#x2F;serendb.com&#x2F;" rel="nofollow">https:&#x2F;&#x2F;serendb.com&#x2F;</a>

[Other] I built MindMaps for Linux and Git cmdz with quiz, typing game and cheatsheet

[Database] Distributed P2P Graph Database A lightweight, decentralized graph database for web apps. Real-time P2P sync, WebAuthn security with RBAC/ACLs, and a high-performance OPFS storage engine—fast, secure, and serverless by design.

[Other] Show HN: Create interactive diagrams with pop-up content This is a recent addition to Vexlio which I think the HN crowd may find interesting or useful.<p>TL;DR: easy creation of interactive diagrams, meaning diagrams that have mouse click&#x2F;hover hooks that you can use to display pop-up content. The end result can be shared with a no-sign-in-required web link.<p>My thought is that this is useful for system docs, onboarding or user guides, presentations, etc. Anything where there is a high-level view that should remain uncluttered + important metadata or details that still need to be available somewhere.<p>You can try it out without signing up for anything, just launch the app here (<a href="https:&#x2F;&#x2F;app.vexlio.com&#x2F;" rel="nofollow">https:&#x2F;&#x2F;app.vexlio.com&#x2F;</a>), create a shape, select it with the main pointer tool and then click &quot;Add popup&quot; on the context toolbar.<p>I&#x27;d be grateful for any and all feedback!

[Database] Show HN: Timeplus Proton 3.0 – First vectorized streaming SQL engine Two years after open sourcing Proton, we&#x27;re releasing v3.0 which brings enterprise-grade streaming capabilities to the open source version: full connectivity, processing, and routing in a single binary with zero dependencies.<p>Key features:<p>First vectorized streaming SQL engine in modern C++ with JIT compilation<p>High-throughput, low-latency, high-cardinality processing End-to-end streaming: ETL, joins, aggregation, alerts, and tasks<p>Native connectors: Kafka, Redpanda, Pulsar, ClickHouse, Splunk, Elastic, MongoDB, S3, Iceberg<p>Native Python UDF&#x2F;UDAF support to support your AI&#x2F;ML work loads<p>The same performance we&#x27;ve proven in large enterprise deployments is now available in the community edition.<p>Would love feedback from anyone working with streaming data or looking for Flink&#x2F;ksqlDB alternatives.

[Build/Deploy] SourceFS: A 2h+ Android build becomes a 15m task with a virtual filesystem

[DevOps] Build smaller, faster, and more secure desktop and mobile applications with a web frontend.

[Other] From HTML table to embed chart - visualize data in 3 clicks MonChart is a powerful and intuitive Edge extension that transforms any HTML table—whether standard tables or grid-based structures—into interactive, visually compelling embed charts with just a few clicks.

[API/SDK] Type-safe S3/R2 uploads for any framework (tiny ~15KB) Add uploads in minutes with end-to-end TypeScript types. Files go straight from the browser to S3-compatible storage via presigned URLs—your server only signs. Works with Next.js, Remix, SvelteKit, Hono; supports S3, R2, DO Spaces, MinIO, and GCS.

[Other] React's useState but it syncs across clients in real-time. The simplest yet powerful primitive to build and ship real-time features in your web apps. useSharedState is a drop-in replacement for React's useState hook but it syncs the state across clients instantly whenever the state is updated. (btw, it's opensource)

[Other] New documentation for the native browser-first React library We're excited to officially launch the new documentation site for Koval UI, our open-source React component library! Our new documentation site (built with Docusaurus) makes it easier than ever to get started, explore components, and build your next project.

[Other] Web Server Library .NET Core, Simple & Fast SimpleW is a Web server library inNET Core. Designed for Simplicity. Built for Speed. Packed with Power.

[Other] A decade of Django best practices in one template Django Keel is an opinionated, production-ready baseline: 12-factor settings, security defaults, pre-commit + ruff/mypy/pytest, GitHub Actions, Docker/Compose, health/ready endpoints, and starter deploy configs (Render, Fly.io, EC2+Ansible, ECS, K8s).

[Other] Automate Your Bug Bounty Hunting. The sidekick for security researchers who want to find vulnerabilities faster. Trooper is built for bug bounty hunters who want to scale their hunting by automating payloads, collecting callbacks instantly, and freeing you up to focus on the real discoveries.

[API/SDK] Enrich your AI & Apps with structured, real-time search data Serpex.dev offers a REST API/SDKs for real-time, structured Search data, giving LLMs and SaaS apps live search insights without scraping complexities. Great for AI applications seeking current search intelligence and data projects.

[IDE/Editor] Like Overleaf and Notion had a baby MonsterWriter - Don't be bothered by formatting content, moving headings from one page to another, manual creation of bibliographies,.. MonsterWriter provides a distraction free writing environments optimized for scholar writings

[Other] Beautiful docs. Optimized for React and Next.js. Fumadocs is a beautiful documentation framework for developers, flexible, performant, running on your React framework.