Pure Ruby LALR parser generator

Lightning fast JSON parser.

Engineer Vocabulary List in Japanese/English

A wrapper of objdump --dwarf=info to visualize an object's structure and show code size

Cross compiling toolchains in Docker images

A pure Ruby HTML5-compliant parser with CSS selector and XPath 1.0 traversal

The new Windows Terminal and the original Windows console host, all in the same place!

Bootstrap development environment

A truly monstrous async web chat using no JS whatsoever on the frontend

Cryptographic library

Fast UTF-8 validation with range algorithm (NEON+SSE4+AVX2)

The compatible library with the API of Ruby's stdlib 'readline'

High-performance log search engine.

Parsing gigabytes of JSON per second : used by Facebook/Meta Velox, the Node.js runtime, ClickHouse, WatermelonDB, Apache Doris, Milvus, StarRocks

Capybara test scenario recorder for Rails

A headless terminal emulator (ANSI / VT100) in C89, moved to https://git.afpy.org/mdk/hl-vt100

ShellCheck, a static analysis tool for shell scripts

Posgra is a tool to manage PostgreSQL roles/permissions.

CRuby syntax for Vim.

backtrace dumper

GZip compatible compressor.

Bring window to top.

Dynamic Subsetting System for CJK fonts.

Oga is an XML/HTML parser written in Ruby.

Live Preview App for Markdown+blockdiag

Wraith — A responsive screenshot comparison tool

RSpec 3 code generator toward existing Ruby code.

A unite.vim source for searching gems to require

Render a <canvas> node to your terminal

Community contributed recipes and techniques