Show HN: OCR Arena – A playground for OCR models https://ift.tt/OHYxGNl

Show HN: OCR Arena – A playground for OCR models I built OCR Arena as a free playground for the community to compare leading foundation VLMs and open-source OCR models side-by-side. Upload any doc, measure accuracy, and (optionally) vote for the models on a public leaderboard. It currently has Gemini 3, dots.ocr, DeepSeek, GPT5, olmOCR 2, Qwen, and a few others. If there's any others you'd like included, let me know! https://ift.tt/Q2kOZRn November 21, 2025 at 10:14PM

Show HN: A game where you invest into startups from history https://ift.tt/YsniJLZ

Show HN: A game where you invest into startups from history https://ift.tt/9rAUGSd November 16, 2025 at 02:35AM

Show HN: Supabase-Test – Fast Isolated Postgres DBs for Testing Supabase RLS https://ift.tt/PxdVJ0O

Show HN: Supabase-Test – Fast Isolated Postgres DBs for Testing Supabase RLS Hi HN — we've built a testing framework for Supabase that spins up fast, isolated Postgres databases for each test case. It’s designed to make RLS policies easy to validate with real database state, without global test fixtures or mock auth. Features: - Instant isolated Postgres DBs per test - Automatic rollback after each test - RLS-native testing with `.setContext()` for auth simulation - Flexible seeding (SQL, CSV, JSON, JS) - Works with Jest, Mocha, and any async test runner - CI-friendly (runs cleanly in GitHub Actions) We also published example projects and a free set of tutorials: https://ift.tt/6BcYy7i Package: https://ift.tt/w0x2FHc Source + full test suite: https://ift.tt/ok9HdGc Happy to answer questions and get feedback, cheers :) https://ift.tt/w0x2FHc November 21, 2025 at 12:09AM

Show HN: MCP Traffic Analysis Tool https://ift.tt/i0GvjZM

Show HN: MCP Traffic Analysis Tool https://ift.tt/Yjayxbd November 17, 2025 at 11:36PM

Making Your Streets Safer: Traffic Calming Coming to 141 Locations Across San Francisco

Making Your Streets Safer: Traffic Calming Coming to 141 Locations Across San Francisco
By Nehama Rogozen

To improve street safety, the SFMTA will be installing traffic calming devices that help reduce speeding at 141 locations throughout San Francisco. The work will start tomorrow, Nov. 20, and continue through this fall and winter. These installations are all the result of requests from community members like you. Listening to your concerns Our Traffic Calming Program is resident driven. When neighbors tell us they're worried about speeding on their block, we listen. We collect data to confirm there's a speeding problem, and then we take action. That’s how each of these 141 upgrades got started...

Published November 19, 2025 at 05:30AM
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Show HN: I made a down detector for down detector https://ift.tt/4iIb09A

Show HN: I made a down detector for down detector After down detector went down with the rest of the internet during the Cloudflare outage today I decided to build a robust, independent tool which checks if down detector is down. Enjoy!! https://ift.tt/9txXhR2 November 19, 2025 at 05:35AM

Show HN: DNS Benchmark Tool – Compare and monitor resolvers https://ift.tt/b14DzMs

Show HN: DNS Benchmark Tool – Compare and monitor resolvers I built a CLI to benchmark DNS resolvers after discovering DNS was adding 300ms to my API requests. v0.3.0 just released with new features: compare: Test single domain across all resolvers top: Rank resolvers by latency/reliability/balanced monitor: Continuous tracking with threshold alerts 1,400+ downloads in first week. Quick start: pip install dns-benchmark-tool dns-benchmark compare --domain google.com CLI stays free forever. Hosted version (multi-region, historical tracking, alerts) coming Q1 2026. GitHub: https://ift.tt/jmRGvLh Feedback: https://forms.gle/BJBiyBFvRJHskyR57 Built with Python + dnspython. Open to questions and feedback! https://ift.tt/jmRGvLh November 19, 2025 at 11:22PM