🛠️ All DevTools

[Other] Gecode is an open source C++ toolkit for developing constraint-based systems

[Other] Turn your code into a moving target. Stop crackers with P-AI PolymorphShield is an AI-powered dynamic code mutation engine built to fight software cracking and piracy. It takes any code and transforms it into a completely unique, obfuscated, and restructured version — every time it's compiled

[IDE/Editor] Frontend learning redefined: build, test, and grow fast Frontend Mastery helps you learn HTML, CSS, JS & React by building real projects in a browser-based IDE. It features a project roadmap, live preview, integrated docs (MDN, GitHub, StackOverflow), and a console for debugging. Learn by doing.

[Other] SquardTech is a leading IT solutions company SquardTech is a leading IT solutions company specializing in custom software development, mobile app and web development, DevOps consulting, and digital transformation services. With a focus on performance, reliability, and client success,

[Other] Free dev tools: format, validate, convert code DevToolLab provides free tools for devs to format, validate, & convert code like JSON, YAML, HTML, CSS. No signup needed, just simple utilities to boost your workflow. Built by developers for developers try it out & share your feedback to help us improve!

[API/SDK] Email Engine Platform ZBounce Email Engine Platform offers a full spectrum of email-related services, accessible via our REST and gRPC APIs.

[IDE/Editor] Your AI coding sidekick that never leaves your side Sidekick is an AI coding assistant that runs locally. Write and fix code without cloud uploads. Features file access, terminal integration, and multiple AI providers for secure development.

[Other] bulk plugins installer for WordPress via browser extension WPBulkify is a browser extension that lets you quickly install WordPress plugins on a website. If you work in Customer support or even as a Developer, you know how long it can take to manually locate and install a plugin from the official repo.

[API/SDK] Fintech prodoct to communicate with Banks by EBICS protocol. EBICS API Client is a self-hosted Docker microservice with REST API for connecting to EU banks via the EBICS protocol. Supports key exchange, SEPA payments, statements, scheduling, and works with most German, French, and Austrian banks.

[Other] Free online tools & utilities Discover Weblaro, your go-to platform for a wide range of free online web tools including SEO utilities, text converters, code formatters, and more.

[Other] Send BTC from cold storage with total peace of mind. A 100% client-side tool for the online parts of an air-gapped Bitcoin (BTC) transaction workflow. Fetch UTXOs & broadcast signed transactions without exposing your private keys to an online machine. Built with the same "paranoid" mindset for maximum security.

[Other] Cron scheduler for devs | smart retries & extended timeouts Built for developers: schedule webhooks, run background jobs, and automate HTTP requests with smart retries, long timeouts, and real-time logs. No bloat, just reliable cron scheduling.

[Other] Track your expenses with a local-first C# finance app. Full-source Blazor finance app for devs who want control. Track expenses offline withNET + SQLite, modular architecture, and full C# code included. No cloud, no lock-in. Build on it, learn from it, or launch your own tool. 💻💸

[Other] Design and code resources to learn Swift, SwiftUI DevTutor helps developers build beautiful SwiftUI apps with ease. It offers copyable code examples and live UI previews to help you quickly understand and apply each component.

[Other] Show HN: MCP-123, a 2-line MCP server/client (Windows-friendly) Got tired of every MCP example being overly verbose, or needing Docker or Mac-only scripts, so I threw together MCP-123. Point it at a tools.py, run `server.run_server(...)`, and the client auto-discovers/calls functions with OpenAI. I hope this is useful to you all.

[Database] Show HN: Tinykv – Minimal file-backed key-value store for Rust I built tinykv because I kept reaching for simple persistent storage in Rust projects but found existing solutions either too complex (sled) or unmaintained (pickledb).<p>tinykv focuses on simplicity: JSON-based, serde-powered, with optional TTL. Perfect for CLI tools, game saves, config storage.<p>Would appreciate any feedback from the HN community!

[DevOps] macOS inside a Docker container.

[Other] Show HN: Ncrypt – Query encrypted files privately with FHE Hey HN,<p>We&#x27;re building ncrypt, an open-source encrypted file manager that allows you to store, manage, and privately query your files using fully homomorphic encryption (FHE). This project originally started as a simple SFTP-like CLI for my personal S3 buckets which I used to send and retrieve encrypted files and have more granular control over key rotation.<p>As the number of files that I was storing grew, file discovery started to become a problem, and I found myself frequently having to download and decrypt files to inspect their contents. Rather than leaving them unencrypted in S3 and therefore easier to search, I started looking into the concept of searching over encrypted data using fully homomorphic encryption. This led me to Zama&#x27;s concrete-python library (<a href="https:&#x2F;&#x2F;github.com&#x2F;zama-ai&#x2F;concrete">https:&#x2F;&#x2F;github.com&#x2F;zama-ai&#x2F;concrete</a>), which provides a simple Python interface for performing FHE operations.<p>FHE is notoriously slow, so rather than trying to search over entire files I focused on a more tractable problem, indexing and searching over file metadata (summaries, keywords, embeddings, etc) which was small enough to make search practical. While still not fast compared to traditional file management tools, ncrypts search performance is decent if you keep directory sizes relatively small (under 25 files), and most of the heavy lifting happens during metadata extraction, not at search time.<p>The two types of encrypted queries we currently support are keyword search and cosine similarity search over vector embeddings, which are generated using user-specified huggingface models. Ncrypt currently supports metadata extraction for text, image, and audio files. Check out our code and give it a try at <a href="https:&#x2F;&#x2F;github.com&#x2F;ncryptai&#x2F;ncrypt">https:&#x2F;&#x2F;github.com&#x2F;ncryptai&#x2F;ncrypt</a>.<p>We love feedback!

[DevOps] Progressive Delivery for Kubernetes

[Other] Free, simple, and intuitive online database diagram editor and SQL generator.