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[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?

[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] 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

[Code Quality] Error handling in Rust

Earth is trapping much more heat than climate models forecast

America's Coming Smoke Epidemic

[Other] We accidentally solved robotics by watching 1M hours of YouTube

[Testing] Show HN: A tool to benchmark LLM APIs (OpenAI, Claude, local/self-hosted) I recently built a small open-source tool to benchmark different LLM API endpoints — including OpenAI, Claude, and self-hosted models (like llama.cpp).<p>It runs a configurable number of test requests and reports two key metrics: • First-token latency (ms): How long it takes for the first token to appear • Output speed (tokens&#x2F;sec): Overall output fluency<p>Demo: <a href="https:&#x2F;&#x2F;llmapitest.com&#x2F;" rel="nofollow">https:&#x2F;&#x2F;llmapitest.com&#x2F;</a> Code: <a href="https:&#x2F;&#x2F;github.com&#x2F;qjr87&#x2F;llm-api-test">https:&#x2F;&#x2F;github.com&#x2F;qjr87&#x2F;llm-api-test</a><p>The goal is to provide a simple, visual, and reproducible way to evaluate performance across different LLM providers, including the growing number of third-party “proxy” or “cheap LLM API” services.<p>It supports: • OpenAI-compatible APIs (official + proxies) • Claude (via Anthropic) • Local endpoints (custom&#x2F;self-hosted)<p>You can also self-host it with docker-compose. Config is clean, adding a new provider only requires a simple plugin-style addition.<p>Would love feedback, PRs, or even test reports from APIs you’re using. Especially interested in how some lesser-known services compare.

[Other] 4-10x faster in-process pub/sub for Go

[API/SDK] Show HN: SmartStepper – Multi-Step Form Library with Config-Based Flow I just released SmartStepper v2 – a declarative and config-based way to handle multi-step forms in React.<p>It lets you define orchestration (next, previous steps), validation, and views via a single config object. No more if&#x2F;else spaghetti or scattered state.<p>GitHub: <a href="https:&#x2F;&#x2F;github.com&#x2F;Miladxsar23&#x2F;smartstepper">https:&#x2F;&#x2F;github.com&#x2F;Miladxsar23&#x2F;smartstepper</a> Demo: <a href="https:&#x2F;&#x2F;smartstepper-demo.vercel.app" rel="nofollow">https:&#x2F;&#x2F;smartstepper-demo.vercel.app</a> Docs: <a href="https:&#x2F;&#x2F;github.com&#x2F;Miladxsar23&#x2F;smartstepper#readme">https:&#x2F;&#x2F;github.com&#x2F;Miladxsar23&#x2F;smartstepper#readme</a><p>Would love feedback, suggestions, or examples if anyone tries it!