🛠️ All DevTools

[Other] Show HN: Terminal in Browser I wrote a small golang project to render terminal on browser. It is a single binary that can be deployed on any server and you can access the terminal over web.

[Other] Show HN: Core – open source memory graph for LLMs – shareable, user owned I keep running in the same problem of each AI app “remembers” me in its own silo. ChatGPT knows my project details, Cursor forgets them, Claude starts from zero… so I end up re-explaining myself dozens of times a day across these apps.<p>The deeper problem<p>1. Not portable – context is vendor-locked; nothing travels across tools.<p>2. Not relational – most memory systems store only the latest fact (“sticky notes”) with no history or provenance.<p>3. Not yours – your AI memory is sensitive first-party data, yet you have no control over where it lives or how it’s queried.<p>Demo video: <a href="https:&#x2F;&#x2F;youtu.be&#x2F;iANZ32dnK60" rel="nofollow">https:&#x2F;&#x2F;youtu.be&#x2F;iANZ32dnK60</a><p>Repo: <a href="https:&#x2F;&#x2F;github.com&#x2F;RedPlanetHQ&#x2F;core">https:&#x2F;&#x2F;github.com&#x2F;RedPlanetHQ&#x2F;core</a><p>What we built<p>- CORE (Context Oriented Relational Engine): An open source, shareable knowledge graph (your memory vault) that lets any LLM (ChatGPT, Cursor, Claude, SOL, etc.) share and query the same persistent context.<p>- Temporal + relational: Every fact gets a full version history (who, when, why), and nothing is wiped out when you change it—just timestamped and retired.<p>- Local-first or hosted: Run it offline in Docker, or use our hosted instance. You choose which memories sync and which stay private.<p>Try it<p>- Hosted free tier (HN launch): <a href="https:&#x2F;&#x2F;core.heysol.ai">https:&#x2F;&#x2F;core.heysol.ai</a><p>- Docs: <a href="https:&#x2F;&#x2F;docs.heysol.ai&#x2F;core&#x2F;overview">https:&#x2F;&#x2F;docs.heysol.ai&#x2F;core&#x2F;overview</a>

[Code Quality] Converting a large mathematical software package written in C++ to C++20 modules

[Code Quality] Show HN: Flint – Write code your way while ensuring remote consistency I just released my biggest project yet: Flint, a language-agnostic Git wrapper that lets developers code using their own formatting preferences locally, while automatically enforcing the project&#x27;s style on push.<p>No more fighting over tabs vs spaces or dealing with noisy diffs.<p>GitHub: <a href="https:&#x2F;&#x2F;github.com&#x2F;capsulescodes&#x2F;flint">https:&#x2F;&#x2F;github.com&#x2F;capsulescodes&#x2F;flint</a> Documentation: <a href="https:&#x2F;&#x2F;flintable.com&#x2F;docs&#x2F;flint&#x2F;" rel="nofollow">https:&#x2F;&#x2F;flintable.com&#x2F;docs&#x2F;flint&#x2F;</a> Article: <a href="https:&#x2F;&#x2F;capsules.codes&#x2F;en&#x2F;blog&#x2F;flintable&#x2F;en-flintable-introducing-flint" rel="nofollow">https:&#x2F;&#x2F;capsules.codes&#x2F;en&#x2F;blog&#x2F;flintable&#x2F;en-flintable-introd...</a>

[Other] Show HN: I built the tool I wished existed for moving Stripe between countries In late 2024, I had to set up a new Stripe account because I incorporated my company in a different country. Turns out it&#x27;s not as simple as just changing the country in a dropdown, you have to start from scratch.<p>I had hundreds of users and using Stripe&#x27;s dashboard to add all of the products, prices, coupons and subscriptions manually would take ages. I contacted a couple of services that help with this kind of migration, but their quotes were way over my budget. My next option was to use Stripe&#x27;s API, which is very powerful but also very complicated. I&#x27;m a designer who can code, but I didn&#x27;t feel confident doing it alone, so I asked a friend, an experienced developer, to help.<p>It proved to be quite challenging, with many details and caveats we had to learn as we went. What we thought would take a couple of days took us a week.<p>After this experience, we teamed up and built <a href="https:&#x2F;&#x2F;stripemove.com" rel="nofollow">https:&#x2F;&#x2F;stripemove.com</a>, a tool that guides you through this whole process, explaining and automating that hard week we went through. It handles the technical complexity while keeping your business running. Customers keep paying on your old account while everything transfers in parallel, then you flip the switch when ready.<p>It&#x27;s a very niche tool, built for founders who need to change their company location for personal or business reasons. For entrepreneurs buying companies established in other countries. For people in the same situation I was in a few months ago. Basically the tool I wished existed, and for a fair price. Designed to get you through this inconvenient process and back as soon as possible on growing your business.<p>Would love to hear from anyone who&#x27;s dealt with similar Stripe migrations. What was your biggest pain point?

[Other] Show HN: Spegel, a Terminal Browser That Uses LLMs to Rewrite Webpages

[Other] Show HN: Jobs by Referral: Find jobs in your LinkedIn network I have some friends who were laid off and are on the job hunt. We were all quite surprised to learn that LinkedIn does not have a &quot;view jobs only at companies where I have connections&quot;, so I built <a href="https:&#x2F;&#x2F;jobsbyreferral.com&#x2F;" rel="nofollow">https:&#x2F;&#x2F;jobsbyreferral.com&#x2F;</a><p>It&#x27;s powered by <a href="https:&#x2F;&#x2F;rapidapi.com&#x2F;letscrape-6bRBa3QguO5&#x2F;api&#x2F;jsearch" rel="nofollow">https:&#x2F;&#x2F;rapidapi.com&#x2F;letscrape-6bRBa3QguO5&#x2F;api&#x2F;jsearch</a>, which is a little pricey, so I&#x27;m trying to decide whether to put more effort into the project (I&#x27;d have to charge _something_ to offset the costs).

[Other] Show HN: A cross-platform terminal emulator written in Java It&#x27;s based on the jediterm library developed for IDEs, but it can also be put to work as a standalone terminal emulator with tabs. The library has been around for more than 10 years, but I don&#x27;t think anyone made a terminal emulator app from it?

[IDE/Editor] Kubernetes IDE with chatbot Eliminate context-switching and reduce troubleshooting time with AI-powered Kubernetes diagnostics. Help developers solve cluster issues independently while keeping your DevOps team focused.

[CLI Tool] AI-powered receipt & invoice extraction for developers Well Extract — Lightweight AI-powered invoice & receipt data extraction tool for developers. CLI-first, open source, and customizable. Run it locally, choose your AI model (OpenAI, Anthropic, Gemini, Ollama), and get structured JSON from any invoice.

[CLI Tool] Rust CLIs with Clap

[IDE/Editor] Claude Code now supports hooks

[Code Quality] I write type-safe generic data structures in C

[Other] Show HN: TokenDagger – A tokenizer faster than OpenAI's Tiktoken TokenDagger is a drop-in replacement for OpenAI’s Tiktoken (the tokenizer behind Llama 3, Mistral, GPT-3.*, etc.). It’s written in C++ 17 with thin Python bindings, keeps the exact same BPE vocab&#x2F;special-token rules, and focuses on raw speed.<p>I’m teaching myself LLM internals by re-implementing the stack from first principles. Profiling TikToken’s Python&#x2F;Rust implementation showed a lot of time was spent doing regex matching. Most of my perf gains come from a) using a faster jit-compiled regex engine; and b) simplifying the algorithm to forego regex matching special tokens at all.<p>Benchmarking code is included. Notable results show: - 4x faster code sample tokenization on a single thread. - 2-3x higher throughput when tested on a 1GB natural language text file.

[Other] WebGL2 powered visualization framework

[Other] Show HN: I rewrote my notepad calculator as a local-first app with CRDT syncing I launched NumPad v1 on here a few years ago, and back then it wasn&#x27;t much more than a thin CodeMirror wrapper around the calculator engine I&#x27;d written.<p>Now I&#x27;ve rewritten it as a PWA that supports multiple documents, persists them to IndexedDB, and has a syncing service for paying customers. Syncing is handled by Automerge[1] under the hood, which <i>should</i> make it relatively easy to get document sharing working too.<p>[1] <a href="https:&#x2F;&#x2F;automerge.org&#x2F;" rel="nofollow">https:&#x2F;&#x2F;automerge.org&#x2F;</a>

[Other] NativeJIT: A C++ expression –> x64 JIT

The Chan-Zuckerbergs stopped funding social causes

Use keyword-only arguments in Python dataclasses

China Dominates 44% of Visible Fishing Activity Worldwide