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Show HN: Learn by rebuilding Redis, Git, a database from scratch
Speculations Concerning the First Ultraintelligent Machine (1965) [pdf]
Reimplementing pf as an eBPF/XDP dataplane on Linux
Show HN: Clx – Compile Lua to Native Executables Through C++20
Hi HN, clx is an ahead-of-time compiler for standard Lua that generates C++20 and produces standalone native executables through GCC, Clang or MSVC. The project started as an experiment to see whether modern C++ could be used as a portable compiler backend instead of LLVM or direct machine code generation. The generated code is then compiled and optimized by the host toolchain. The latest release replaces the previous NaN-tagged value representation with a new shadow-types implementation, adds f
Networking and the Internet, from First Principles
Show HN: Hidetext.sh – encrypted pastebin where the server never sees the key
Hi HN! I built hidetext.sh — a way to share text, code, and files through links the server can't read. How it works: your browser generates a random key and encrypts everything locally (NaCl secretbox, XSalsa20-Poly1305). Only ciphertext is uploaded. The key goes into the URL fragment — the part after # — which browsers never send to servers. The link carries the key, my server stores the locked box, and the two only meet in a browser. A design detail I'm fairly happy with: burn-after-read doesn
FCC approves test of space mirror to light night sky
https://www.nytimes.com/2026/07/10/climate/fcc-space-mirror.... https://www.pcmag.com/news/fcc-approves-reflect-orbitals-gia...
FCC Approves Test of Space Mirror to Light Night Sky Despite Outcry
Ofcom Wants American Police to Collect Its Speech Fine
Trident – macOS menu-bar utility that remaps trackpad gestures
World-War-Ⅱ-era telephone line still in use in Upper Tanana Valley Alaska (2021)
The Earth Is Coated in Supernova Dust
Engineering Peace
Your code is fast – if you're lucky
AI Found a Root Bug in Linux That Everyone Missed for 15 Years
Plus: The Pentagon is training amateurs to become part of its hacker army, a Flock license plate reader error led to cops surrounding a car reviewer, and more.