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Picocli is a modern framework for building powerful, user-friendly, GraalVM-enabled command line apps with ease. It supports colors, autocompletion, subcommands, and more. In 1 source file so apps can include as source & avoid adding a dependency. Written in Java, usable from Groovy, Kotlin, Scala, etc.
The ESTree Spec
The Elegant Parser
Written in C++ and using SDL, The Powder Toy is a desktop version of the classic 'falling sand' physics sandbox, it simulates air pressure and velocity as well as heat.
A Swift framework for parsing, formatting and validating international phone numbers. Inspired by Google's libphonenumber.
A fast, powerful, CommonMark compliant, extensible Markdown processor for .NET
A php swagger annotation and parsing library
Fast, small color manipulation and conversion for JavaScript
PathPicker accepts a wide range of input -- output from git commands, grep results, searches -- pretty much anything. After parsing the input, PathPicker presents you with a nice UI to select which files you're interested in. After that you can open them in your favorite editor or execute arbitrary commands.
A simple, semantic and developer-friendly time package for golang
Zero-modification Human-in-the-Loop adapter for OpenOPC's agentic DAG runtime.
A flexible package manager that supports multiple versions, configurations, platforms, and compilers.
Kimai is the #1 open-source time-tracking application. From freelancers to companies and organisations - everyone can manage timesheets, generate reports, create invoices and so much more... Web-based multi-user application, available as On-Premise or SaaS version: https://www.kimai.org
PHP version of Google's phone number handling library
Simple data persistence for your Electron app or module - Save and load user preferences, app state, cache, etc
ˈyːbɐˌzɪçt
Share and collaborate by syncing with any Git repository instantly. Linux, macOS, and Windows
XML to JavaScript object converter.
:rainbow: Javascript color conversion and manipulation library
[COLM 2024] OpenAgents: An Open Platform for Language Agents in the Wild
Open source clone of Theme Hospital
An agent skill for building premium, immersive, scroll-driven websites. Works with Codex, Claude Code, and other coding agents. Also available as a Claude Code plugin.
A blazingly fast multi-language serialization framework for idiomatic domain objects, schema IDL, and cross-language data exchange.
HTML5/EPUB3 version of SICP