1. Show HN: Schemagic – visual JSON Schema editor (schemagic.app)
Visual JSON Schema editor for designing, exploring, and validating schemas in one place.
2. Show HN: I gave my job search data an MCP interface (ackd.app)
Connect your AI tools to your job search data via MCP.
3. Show HN: AI Text Watermarking Playground (watermark.keito.me)
Learn how AI text watermarks are generated and detected in a hands-on demo.
8. Show HN: A visual ping utility that is pretty (source.tube)
🏓 A pretty ping/ICMP utility 🦀
10. Cross-Validation From Scratch and a Surprise at n=100 (www.kenkoonwong.com)
Textbooks say LOOCV has the lowest bias but highest variance compared to 10 and 5-fold. Coded a K-Fold CV from scratch for learning to test that on simulated data 🔍📊 — and at n=1000 it holds up. At n=100? Not so much. 🤔
The author tests K-Fold Cross-Validation against Leave-One-Out Cross-Validation using simulated data, revealing surprising performance differences at smaller sample sizes. This analysis highlights how traditional expectations about bias and variance may not hold true in practice.
11. 2,085 Tests, and None of Them Opens the Front Door (i.brandanthonymcdonald.com)
13. Show HN: Open-source comment section widget, Disqus alternative (github.com)
Open source comments platform, alternative to Disqus. - Runn077/PlopKit
14. Show HN: I turned the ending of Trainspotting into a tiny web art installation (trainspotting.vercel.app)
One line of type, running right to left forever, spoken as it passes.
15. Show HN: Making every company programmable like a computer [video] (www.youtube.com)
https://www.tnxapi.com/UI/LandingPage.php
16. Show HN: OpenWebSearch – A router for web search indexes (openwebsearch.ai)
One API for every web search provider. Choose the provider that fits each use case and receive every result in one standardized format.
18. Show HN: Good web design inspiration for makers focused on results not awards (websitevice.com)
19. Show HN: An RSS Feed for DeepSWE Benchmarks (rss.xlit.app)
20. Show HN: Convertix – Fast, 100% in-browser media and QR tools (convertix-fast-imager-co.blogspot.com)
21. The Marvelously Inventive Life of Mária Telkes (2023) (www.pbs.org)
A look at the scientist’s breakthrough innovations, from the world’s first solar-heated home to an electricity-free Easy Bake Oven.
Mária Telkes made significant contributions to solar energy, including creating the first solar-heated home. Her inventive spirit also led to the development of practical solutions like an electricity-free Easy Bake Oven.
22. The FastLanes Unified Transport Layout (blog.dave.tf)
An explanation of how the UTL layout enables ridiculously fast SIMD delta-decoding
Learn how the Unified Transport Layout enhances SIMD delta-decoding for significantly improved processing speeds in data handling. This method could transform the efficiency of data processing tasks.
24. Show HN: An Hacker News TUI Reader, handcrafted in Rust (www.hncli.newstackwhodis.com)
hncli, a modern TUI for browsing Hacker News
25. Show HN: I backtested my own stock site's signals and published what failed (matterofstocks.com)
Nightly scoring across 3,500+ US stocks. Every signal graded against what actually happened.
26. Show HN: Columnary, a better experience for reading long articles (chromewebstore.google.com)
Turn long articles into calm, full-height columns with native horizontal scrolling.
27. Show HN: SolidSync – Poorman's Solidworks PDM (github.com)
headache-less selfhost mechanical engineering part manager - Baggiest/SolidSync
28. Show HN: FileIndexer (simple N-copies verification on ext USB drives) (www.thanassis.space)
FileIndexer - the simplest possible file-based backup to external USB drives