🛠️ All DevTools

[Database] Show HN: UnisonDB – Log-native KV database that replicates like a message bus Hi HN,<p>For the past few months, I’ve been building UnisonDB — a log-native database where the Write-Ahead Log (WAL) is the database, not just a recovery mechanism.<p>I started this because every time I needed data to flow — from core to edge, or between datacenters — I ended up gluing together a KV database + CDC + Kafka.<p>It worked, but it always felt like overkill: too many moving parts for even small workloads, and too little determinism.<p>What is it?<p>UnisonDB unifies storage and streaming into a single log-based core. Every write is: • Durable (appended to the WAL), • Ordered (globally sequenced for safety), • Streamable (available to any follower in real time).<p>It combines B+Tree storage (predictable reads, no LSM compaction storms) with WAL-based replication (sub-second fan-out to 100+ nodes).<p>Key Ideas<p>1. Storage + Streaming = One System — no CDC, no Kafka, no sidecar pipelines<p>2. B+Tree-Backed — predictable reads, zero compaction overhead<p>3. Multi-Model — KV, wide-column, and large objects (LOB) in one atomic transaction<p>4. Replication-Native — WAL streams via gRPC; followers tail in real time<p>5. Reactive by Design — every write emits a ZeroMQ notification<p>6. Edge-Friendly — replicas can go offline and resync instantly<p>Performance &amp; Tradeoffs 1. Write throughput is lower than pure LSM stores (e.g. BadgerDB) — because writes are globally ordered for replication safety. Deliberate tradeoff: consistency &gt; raw write speed.<p>2. Still ~2× faster than BoltDB with replication enabled.<p>Tech Details<p>Written in Go<p>FlatBuffers for zero-copy serialization<p>gRPC for streaming replication<p>GitHub: <a href="https:&#x2F;&#x2F;github.com&#x2F;ankur-anand&#x2F;unisondb" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;ankur-anand&#x2F;unisondb</a>

[Other] Claude Code Can Debug Low-Level Cryptography

[Other] WebAssembly (WASM) arch support for the Linux kernel Demos at: <a href="https:&#x2F;&#x2F;joelseverin.github.io&#x2F;linux-wasm&#x2F;" rel="nofollow">https:&#x2F;&#x2F;joelseverin.github.io&#x2F;linux-wasm&#x2F;</a>

[CLI Tool] GitHub Copilot CLI brings the power of Copilot coding agent directly to your terminal.

[Other] Find the technology behind any website Intelbee gives you the power to explore any website’s tech stack, track market trends in real time, and generate leads effortlessly. Turn web intelligence into actionable insights and grow smarter, faster, and ahead of the competition.

[API/SDK] Phishdef — phishing url api to detect malicious links PhishDef is a cybersecurity-focused SaaS company offering a fast and reliable API for real-time phishing URL detection. Designed for developers, security teams, and digital platforms, our service helps prevent phishing threats before they reach end users. We prioritize speed, accuracy, and privacy — with sub-100ms response time and no tracking or data logging.

[Other] CodeToMap (https://codetomapsakura.streamlit.app/) Website Introduction: CodeToMap by Sakura Overview CodeToMap (https://codetomapsakura.streamlit.app/) is a dynamic and innovative web platform developed by Sakura, designed to transform code-based data into interactive and visually engaging maps. Built using the Streamlit framework, this site merges the simplicity of Python programming with the power of modern geographic visualization tools, offering users an intuitive and efficient way to convert structured data into geographical insights.

[Other] 100 AI prompts that actually make you a better developer. If you’re a developer, freelancer, or student who wants to boost productivity, this collection is for you. I’ve compiled 100 developer-optimized AI prompts, organized across backend, frontend, DevOps, testing, automation, AI integration, and more. Each prompt is practical, ready to use, and built to help you write cleaner code, automate workflows, and save time every day. Get instant access here → https://hamzaflare013.gumroad.com/l/100-promptpack,

[Other] Annam POS is your complete restaurant management solution AnnamPOS Powerful Point of Sale. Based on over 15 years of development experience, our product is implemented throughout the UAE, Oman, Saudi Arabia, Kenya and Sri Lanka. We are experts in the latest technology tools like Android Studio, Swift, Flutter, Laravel, Angular, React, Python, and Java to deliver high-quality POS, ERP, Android, and iOS apps. We aren’t just software developers, we also have hardware solutions, which in turn gives our clients a total end to end service.

[Other] AI Journey Starts Here AI Lab as a Service by Cyfuture.ai lets you build, train, and deploy AI models instantly without managing infrastructure. Access powerful NVIDIA GPUs, pre-configured environments, and top ML frameworks like TensorFlow and PyTorch. Scalable, secure, and built for innovation—your on-demand AI research lab in the cloud.

[Code Quality] Opinionated, zero-config code linter and formatter Ultracite is a highly opinionated, zero-configuration linter and formatter, designed to help you and your AI models write consistent and type-safe code without the hassle of configuration.

[Other] Stay on top of your pull requests from your Mac menu bar PRS Menubar is a lightweight macOS app for developers. Track pull requests from Github/Gitlab/Gitea directly from the menu bar, open them instantly, and get automatic updates.

[Other] Made to measure. Built for everything else. Screen Ruler is the complete inspection suite for web developers and designers. Measure elements, catch accessibility issues, extract colors and assets, and inspect CSS properties

[Other] Morse code translator - Convert Morse to English in Seconds! The Morse Code Translator Chrome Extension is a powerful yet easy-to-use browser tool designed for everyone—from beginners learning the Morse alphabet to professionals decoding messages and enthusiasts experimenting with light or sound signals.

[Other] Show HN: I built a self-hosted error tracker in Rails This project is inspired by 37signals’ ONCE idea. I replicated the whole process and have already sold a few copies (the testimonials are real).

[API/SDK] Show HN: Paykit – one SDK for Stripe, PayPal, Paddle (stop reading 5 API docs)

[Other] x86 architecture 1 byte opcodes

[Other] Use DuckDB-WASM to query TB of data in browser

[Other] Show HN: Loopletter: Open-source email marketing platform Hi, I started building Loopletter, an open-source email marketing platform built specifically for independent artists and creators. I&#x27;ve been using this for a while to run marketing campaigns for my own company. But due to the lack of time to update it i&#x27;ve decided to open it up under the MIT license so other people and industries can self-host, extend, or just learn from the codebase.<p><pre><code> What’s inside: - Full campaign builder (visual editor, reusable templates, optional Spotify-powered layouts) - Audience management tooling (imports, segmentation, consent workflows, list cleanup) - Queue-driven sending with AWS SES, BullMQ, and Redis — handles rate limits, retries, and deliverability feedback - Analytics dashboards with real-time metrics, campaign history, and basic attribution - Infrastructure scripts for Supabase, AWS EventBridge&#x2F;Lambda, and Upstash Redis so you can set everything up from scratch Tech stack: Next.js, React 19, TypeScript, Tailwind, Clerk for auth, Supabase (Postgres) for storage, AWS SES + S3 for mail&#x2F;asset delivery. The repo has docs, scripts, and a demo data sandbox because we know email platforms can be boring to set up without real content. Why open-source? Most tools in this space are either huge enterprise SaaS products or very marketing&#x2F;sales oriented. Independent artists have different needs (merch drops, tour announcements, limited release windows) and usually lean on social platforms they don’t control. Email still converts best for them, but standing up a full stack is painful. We’d love to see small labels, agencies, and indie devs fork it, run it for their communities, or contribute features. I&#x27;m especially curious if this has potential to be something bigger. Repo link: https:&#x2F;&#x2F;github.com&#x2F;createdbymax&#x2F;Loopletter-Open-source-email-marketing-platform Production website: https:&#x2F;&#x2F;loopletter.co&#x2F; Happy to answer questions about the project, SES deliverability, or anything else related to running email at indie scale. Thanks for taking a look!</code></pre>

[Other] Debug like a boss: 10 debugging hacks for developers, quality engineers, testers