I took back Video.js after 16 years and we rewrote it to be 88% smaller
Rival open-source video projects united to shrink the bundle size by 88 percent.
Open source projects from Show HN — libraries, frameworks, and community tools with public code.
Rival open-source video projects united to shrink the bundle size by 88 percent.
Full chess engine in 2KB — demoscene-grade constraint coding transcends gaming.
Formally verified 3D mesh intersection - trust 93 lines of spec, not 1000+ lines of AI-written code
First formally verified 3D CSG operation where humans only trust 93 lines of spec.
Two-year reverse-engineering effort resurrects unplayable 2000s web games like Habbo Hotel.
Full OS with browser in 1.8MB — demoscene constraint craft that any programmer should see.
A 44KB suite replacing standard coreutils by ditching libc and heap entirely.
Fits a real filesystem and shell in 80 KiB without Linux, ELF, or libc.
AI curation with human calibration benchmarks—surfaces quality HN projects you'd actually use.
A modern web browser for Classic Mac OS 9 PowerPC. Real CSS3, ES5 JavaScript, native HTTPS — built with CodeWarrior on the Carbon API.
Native TLS 1.2 on Classic Mac OS 9 without proxying is actual wizardry.
AI that cites real laws instead of hallucinating—15 countries live, 132 planned, free forever.
Custom noise node implementations finally close the gap between reference and open-source renders.
DNA-encoded ULID makes knowledge cards globally unique, sortable, and decodable offline forever.
BXP — Open universal file system standard for atmospheric exposure data. Like HTTP for air quality. No hardware required. Apache 2.0.
HTTP-equivalent standard for air quality data, federated networks, no licensing or hardware lock-in.
Multitrack DAW running entirely in the browser with zero backend dependencies.
Open-source intelligence for the global theater. Track everything from the corporate/private jets of the wealthy, and spy satellites, to seismic events in one unified interface. Hook an AI agent up to have it parse through data and find previously unseen correlations. The knowledge is available to all but rarely aggregated in the open, until now.
Tracks jets, ships, satellites, and earthquakes live on one unified dark-ops map.
Glean alternative on pure Postgres—hybrid search, sandboxed code execution, permission inheritance.
The Swiss Army Knife of Offline AI. Chat, Speak, and Generate Images - Privacy First, Zero Internet. Download an LLM and use it on your mobile device. No data ever leaves your phone. Supports text-to-text, vision, text-to-image
Complete offline AI suite on mobile: text, images, vision, voice—no servers, no uploads, real speeds.
A modern, network-enabled music player platform built on Rockbox technology https://www.rockbox.org
Rockbox engine as a server daemon with AirPlay and Snapcast multi-room sync built in.
Music stem separation in the browser without uploads—Rust + WebGPU beats cloud dependency.
Finally boots Darwin in QEMU without proprietary kexts or root access.
Standardized sidecar format finally solves guided view for comics without altering original files.
Reverse-engineered local API lets you own print data without Bambu's cloud.
A unified symbolic-numeric expression runtime for Python where all elementary functions are created from a single operator
EML lowering rewrites any expression to exp(x) - ln(y) trees based on actual research paper.
Northstar web browser, Open Source License: GPL v3. Northstar web browser is a real web browser, not based on Firefox or Chrome.
142k lines of C with no JIT and Landlock sandboxing—real browser, real constraints.
145k LOC browser engine in C with no JIT and spec-first compliance.
AUREA beats JPEG by compressing images using variable-size Lapped Orthogonal Transform (8/16/32), a zero-bit Turing morphogenesis saliency field, AC-domain Chroma-from-Luma prediction, and rANS entropy coding with Exp-Golomb.
Beats JPEG with zero-bit saliency fields and full 4:4:4 chroma — rare codec craft in Rust.
BeePub is a self-hosted ebook library and reader for EPUB collections. It can serve as a modern alternative to calibre-web, while also working as a standalone library for users who do not run Calibre.
Finally beats calibre-web with native iOS app and proper vertical CJK text rendering.
Bringing cutting edge Linux T2 Mac support to stock Fedora using DKMS modules
Splitting T2 drivers into four upstreamable modules beats monolithic custom kernels.
Started with a hyper-compact C++ bit-packed sieve — months of whittling it down to ~9 lines of raw bit manipulation. One bit per odd number, Brian Kernighan's bit trick for extraction, hardware tzcnt
Impressively engineered low-level, bit-packed segmented sieve in Rust — a technical showcase with niche appeal to systems and algorithm enthusiasts.
Receiver is a modern internet radio player for GNOME, featuring a curated collection of over 30,000 stations from around the world.
Killed dead-link radio directories by scanning and verifying 50k streams, shipping a real app.
Git-meets-docs blogging: readers fork posts, edits become pull requests, merges in real-time.
A legally defensible, industry-grade blueprint for building an open-source NTFS structural repair engine from scratch.
1400-line clean-room NTFS repair spec when ntfsfix can't handle real corruption.
Serverless search for the old weird web when Google only finds SEO slop.
Full Core War simulator in 105 lines of Ruby — constraint craft at its finest.
Custom rendering engine handles 385k PDFs smoother than standard viewers.
Pure C implementation of FastEnhancer. 3.3x faster than the ONNX Runtime graph, same quality.
Hand-written int8 GEMM kernels achieve 0.069 RTF on M2 with zero heap allocation.
Machine-readable agent conduct rules for restaurants. A /.well-known/restarules.json discovery model.
Robots.txt for AI restaurant agents addressing real regulatory compliance needs.
AT Protocol key rotation for death succession—why didn't this exist before?
FairPlay auth via ARM64 snapshots lets Linux users mirror to Apple TV.
The missing Kindle toolkit. Dictionaries, books, comics. Single Rust binary. ~7,000x faster than kindlegen for Modern Greek, ~40x faster for French.
Reverse-engineered undocumented MOBI format — builds dictionaries in 6 seconds vs 12 hours.
Peru's 1993 Constitution as a Git history — git blame shows which law changed each line
Git blame reveals which law changed each constitutional line since 1993.
Donors fund compute credits so maintainers can use AI tools without burning personal cash.
First formally verified polygon intersection with Lean 4 proof and web demo.
Arc visualization for artifact provenance is genuinely novel at this scale.
A modern, network-enabled music player platform built on Rockbox technology https://www.rockbox.org
Running Rockbox's DSP engine as a headless Linux daemon with gRPC is genuinely wild.
Native macOS app for the Razer Stream Controller; a community replacement for the retired Loupedeck software.
Reverse-engineered USB protocol brings dead Razer hardware back to life on macOS.
Binding slides to video in one manifest solves link rot better than YouTube embeds ever could.
Local LLM with sleep cycles, memory consolidation, and moral philosophy framing—audacious conceptual leap beyond chatbot UX.
306 projects