🛠️ All DevTools

[Other] Maximize the power of colors Chromo is a powerful color analysis tool that instantly gives you detailed info from any HEX code. See multiple color formats, contrast checks, shades, tones, and related colors — perfect for designers, developers, and anyone working with colors.

[Other] Complete coding platform DormData is the ultimate coding practice and competition platform designed for developers who want to level up their skills through real challenges, real competition, and real results.

[IDE/Editor] One tool that solves all your coding needs! Coding Assistant offers Personalized Coding Tutor, Code Generator, Explainer, Refactor, Convertor, Debugger, beginner-level coding interview problems, Compiler, and Daily News in Tech and Programming. It acts like your ultimate coding companion.

[Other] Modern toggle switches built with pure CSS A collection of sleek, animated CSS toggle switches ready to copy and paste. Fully responsive and customizable without any JavaScript. Perfect for developers and designers looking to enhance UI forms. 🔗 https://www.themedevhub.com/tools/css-switch-collection

[Other] Interactive game worlds from a single image Hunyuan-GameCraft by Tencent is an open-source model for generating playable, high-dynamic game videos from a single image and user actions. It offers fine-grained control and impressive realism for creators and developers.

[Other] Nextjs and Supabase Boilerplate Build and launch your SaaS product faster with a scalable Next.js and Supabase boilerplate. Includes authentication, multi-organization support, billing, member management, and everything else you need to get your app live.

[CLI Tool] Show HN: Yet another memory system for LLMs Built this for my LLM workflows - needed searchable, persistent memory that wouldn&#x27;t blow up storage costs. I also wanted to use it locally for my research. It&#x27;s a content-addressed storage system with block-level deduplication (saves 30-40% on typical codebases). I have integrated the CLI tool into most of my workflows in Zed, Claude Code, and Cursor, and I provide the prompt I&#x27;m currently using in the repo.<p>The project is in C++ and the build system is rough around the edges but is tested on macOS and Ubuntu 24.04.

[Other] ResurrectedGod: The Ruby Framework for Process Management

[API/SDK] Show HN: Inworld Runtime – A C++ graph-based runtime for production AI apps Hey HN, this is Igor, one of the engineers behind Inworld Runtime, which we&#x27;re releasing today in public preview.<p>We built it to solve the common problem we and our customers had: engineers spend more time on AI ops and plumbing than on actual feature development. This was often due to the challenge of using Python for I&#x2F;O-bound, high-concurrency workloads and complexity maintaining pipelines with streams that use always-changing ML models.<p>Our solution is a high-performance runtime written in C++ with the core idea of defining AI logic as graphs. For instance, a basic voice-to-voice agent consists of STT → LLM → TTS nodes, while the connecting edges stream data and enforce conditions. This graph engine is portable (Linux, Windows, macOS) and can run on-device.<p>We built a few key features on top of this C++ core:<p>- Extensions. Runtime architecture decouples graph definition from implementation. If a pre-built component doesn&#x27;t exist, you can register your own custom node&#x2F;code and reuse it in any graph without writing any glue code.<p>- Routers. You can dynamically select models&#x2F;settings on the per-node basis depending on the traffic as well as configure policies for fallbacks and retries to get the app ready for production.<p>- The Portal. A web-based control plane UI to deploy graphs, push config changes instantly, run A&#x2F;B tests on live traffic, and monitor your app with logs, traces, and metrics.<p>- Unified API. Use our optimized models or route to providers like OpenAI, Anthropic, and Google through a single, consistent interface and one API key.<p>We have a Node.js SDK out now, with Python, Unity, Unreal, and native C++ coming soon. We plan to open-source the SDKs, starting with Node.js.<p>The docs are here: <a href="https:&#x2F;&#x2F;docs.inworld.ai&#x2F;docs&#x2F;runtime&#x2F;overview" rel="nofollow">https:&#x2F;&#x2F;docs.inworld.ai&#x2F;docs&#x2F;runtime&#x2F;overview</a><p>We&#x27;re eager for feedback from fellow engineers and builders. What do you think?

[API/SDK] Show HN: Vaultrice – A real-time key-value store with a localStorage API Hi HN,<p>I&#x27;m Adriano, one of the makers of Vaultrice. I&#x27;m excited (and a little nervous!) to share what we&#x27;ve been building.<p>For years, we found ourselves in a frustrating loop: whenever we needed a simple real-time feature—like a &quot;who&#x27;s online&quot; list, a collaborative app, or just sharing state between a marketing site and our main app — we&#x27;d end up spending days setting up the same stack or discarded to do it. Setting it up, it always involved wiring together a database, a WebSocket server, an API, and managing the connection state. It felt like massive overkill for what we were trying to achieve.<p>We wanted a tool that felt as simple to use as the browser&#x27;s `localStorage` API but worked across domains and devices, with real-time sync and security built-in.<p>So, we built Vaultrice.<p>It’s a key-value data store built on top of Cloudflare&#x27;s Durable Objects, which gives you a strongly consistent backend for each data object. You interact with it through our TS&#x2F;JS SDK, which comes in two flavors:<p>1. `NonLocalStorage`: A low-level client with a `localStorage`-like API (`setItem`, `getItem`, etc.) plus real-time events and presence (`.on()`, `.join()`).<p>2. `SyncObject`: A higher-level, reactive JavaScript Proxy. You just change a property on an object (`doc.title = &#x27;New Title&#x27;`), and it automatically syncs to all other connected clients.<p>The goal is to let you build the real-time features you want in minutes, not days. We&#x27;ve also put a lot of thought into a layered security model, allowing you to go from simple API key restrictions all the way to server-signed object IDs and client-side E2EE.<p>We’ve just launched and would be grateful for any feedback from the HN community. What do you think of the API design? Are there use cases we haven&#x27;t considered? Any thoughts on the security model?<p>We&#x27;ll be here (or via email (support@vaultrice.com)) to answer any questions. Thanks for checking it out!

[Other] Writing a competitive BZip2 encoder in Ada from scratch in a few days – part 2

[Other] A powerful open source UI framework for Laravel • Build and ship admin panels & apps fast with Livewire

[Other] Jitsi Meet - Secure, Simple and Scalable Video Conferences that you use as a standalone app or embed in your web application.

[API/SDK] Mask your LLM APIs for secure rotation and logging MaskLLM helps you mask your LLM API keys for secure rotation and sharing across different development environments.

[API/SDK] Build custom workflows from meeting transcripts and AI notes Whether you need to archive compliance records, trigger workflows when key terms appear, feed dashboards with fresh insights, or pass transcripts to an LLM for tailored recaps and action plans, Fellow’s API gives you everything you need to make it happen.

[Other] Design complex AI workflows using intuitive YAML templates Create, deploy, and manage robust multi-agent systems with Compozy—unifying agents, tasks, tools, and signals into scalable YAML workflows. Powered by Go and Temporal for performance and reliability, it optimizes costs and gives enterprises full control.

[Other] LeetCode but for Prompt Engineers The new LeetCode but for prompt engineers. Master prompt engineering with structured challenges and AI-powered feedback. Join 1000+ developers already improving their skills.

[API/SDK] Rapid api prototyping & mock data Mockden helps developers prototype APIs with custom schemas and mock data. Fast, scalable, and ideal for testing

[Other] Organize your code snippets and technical resources Jotty is a modern web app for developers to save, organize and share code snippets, useful links and technical notes. Build faster with organized code snippets.

[Other] Generate Excel formulas by DeepSeek AI Imagine a programmer being asked to use Excel! This task seems even more daunting than writing code. Do not fear, however, for there now exists a tool that can rapidly generate Excel formulas. Try it out, and see for yourself.