Spoon is a metaprogramming library to analyze and transform Java source code. 🥄 is made with ❤️, 🍻 and ✨. It parses source files to build a well-designed AST with powerful analysis and transformation API.

A code generator for array-based code on CPUs and GPUs

Optional Chaining for TypeScript

Upgrade Elm projects

A collection of transforms for use with JSCodeshift

Prettier for localization, automatically convert React and Next.js apps into multilingual applications FAST.

Application transformation tool

CLAW Compiler for Performance Portability

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Error Prone extensions: extra bug checkers and a large battery of Refaster rules.

Java to C#.Net Translator

BubblesAgent: Open-source AI agent using LLMs (GPT, Gemini, Claude) for automated, large-scale code refactoring and transformation.

A web app for creating animated videos of code morphing between steps. Paste code snippets, configure syntax highlighting and export smooth token-level transitions as WebM/MP4 videos.

Lazily evaluated arrays in Python

Safe AST-based code transformations for MCP agents, standalone tools, and automation runtimes.

Automatic source transformation to apply HPC frameworks with minimal user interaction

A configurable code modifier for typescript and friends. Can transform entire codebases to enforce better coding practices, eliminate tech debt in one fell swoop, and catch bad code before it is committed.

Transform React components to React Native automatically

Automated Minecraft mod migration tool — currently supports Forge 1.20.1 to NeoForge 1.21.1 via a 5-pass transformation pipeline (text, AST, structural, build, resources)

Convert Verilog module to chisel3 BlackBox