Rust

• z80emu - a minimalistic Z80 CPU emulation library in Rust.
• SPECTRUSTY - a library for building highly customized ZX Spectrum emulators.
• delharc - a Rust library for parsing and decoding LHA/LZH archives.
• ym-file-parser - a Rust library for parsing the AY/YM chiptune format files.
• royal-image-viewer - A simple image viewer that can be controlled via UDP messages.

Rust / WebAssembly

• web-zxspectrum - a WebAssembly example emulator built with SPECTRUSTY
• fractx-wasm-demo - a Mandelbrot set WebAssembly demo in Rust.
• plasma - an eye-candy pixel plasma randomized generator - for the desktop and the web.

Node.js

• zmq-raft - an opinionated Raft implementation powered by ØMQ.
• streamdb - a log based in-memory document database.
• kafka-tools - nice and easy Apache Kafka® management tools.
• inspect-protobuf - inspect protobuf messages or convert to JSON, best served with kafkacat.
• unique-filter - a filesystem-based exact unique filter with predictable maximum memory usage.

• murmurhash-native - MurmurHash native bindings for Node.js.
• ip2location - a native IP2Location library for Node.js.

Ruby

• em-pg-client - a PostgreSQL asynchronous EventMachine client (ruby-pg) wrapper.
• redis-em-mutex - a cross server-process-fiber EventMachine + Redis based semaphore.
• z80-rb - a Z80 assembler DSL in Ruby, a build system, a ZX Spectrum basic parser, and more.
• Stackless-Ruby - your recursive calls may no longer fear the wrath of the SystemStackError error!

Bash

• gitsnap - scripts to create git repositories backed up by Tarsnap.
• certool - a pill for the OpenSSL certification pain-in-the-back.

Amiga

• midiIn - a MIDI-controlled sample player for AMIGA, written between 1996-99.

ZX Spectrum

• Y.A.R.T.Z - a ZX Spectrum demo released on the Speccy.pl party 2019-04-06.