Open Source Packages
Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.
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ESLint
The pluggable JavaScript and TypeScript linter that finds and fixes code problems through a fully customizable, plugin-based rule engine.
lint-staged
Run linters and formatters only against the files staged in git, so a slow full-project lint never blocks a commit.
Oxlint
Rust-based JavaScript/TypeScript linter that runs 50-100x faster than ESLint, with zero configuration required.
Stylelint
An extensible CSS linter that catches errors and enforces consistent styling conventions.
Ruff
An extremely fast Python linter and code formatter, written in Rust, built as a drop-in replacement for Flake8, Black, isort, and dozens of plugins.
mypy
Optional static type checker that catches Python bugs before you run your code
msgpack
A reflect-based MessagePack encoder and decoder for Go with struct tag support, custom extensions, and a sync.Pool-backed API for allocation-light serialization.
isort
Automatically sorts and organizes Python import statements
msgspec
A fast, zero-cost serialization and validation library for JSON, MessagePack, YAML, and TOML in Python.
flake8
The CLI linter that wraps PyFlakes, pycodestyle, and McCabe complexity checks into a single Python style and error checker.
rmp-serde
Serde-powered MessagePack serialization and deserialization for Rust
arq
Fast job queuing and RPC in Python built on asyncio and Redis
Pylint
A static code analyser for Python that catches bugs and enforces coding standards
msgpackr
Ultra-fast MessagePack serialization for JavaScript with record structures for faster, more compact encoding.
fallow
Rust-native static analysis for TypeScript and JavaScript that finds dead code, duplication, cycles, and architecture drift with no compiler or AI in the loop.