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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MobX
Simple, scalable state management that reactively tracks observable state so derivations update only when what they actually read changes.
Solid.js
A declarative JavaScript library that compiles to real DOM nodes and updates them with fine-grained reactivity — no virtual DOM required.
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.
msgspec
A fast, zero-cost serialization and validation library for JSON, MessagePack, YAML, and TOML in Python.
rmp-serde
Serde-powered MessagePack serialization and deserialization for Rust
arq
Fast job queuing and RPC in Python built on asyncio and Redis
msgpackr
Ultra-fast MessagePack serialization for JavaScript with record structures for faster, more compact encoding.
XState
A dependency-free state machine and statechart library for modeling complex application logic as actors, states, and events.
mobx-utils
Utility functions and common reactive patterns for MobX, from Promise-to-observable bridging to lazy subscriptions.
Watermill
A Go library for building event-driven applications with a unified Pub/Sub API across Kafka, RabbitMQ, NATS, SQL, and more.
ormsgpack
A fast Rust-backed MessagePack library for Python with native dataclass, datetime, numpy, and Pydantic support.
influxdb-client-python
The official Python client for InfluxDB 2.x/Cloud with sync, async, and pandas-native APIs
marimo
A reactive Python notebook that's reproducible, git-friendly, and deployable as scripts or apps.
Leptos
Full-stack, isomorphic Rust web framework built on fine-grained reactivity for fast, declarative UIs.
srsly
Unified, cross-platform JSON, JSONL, MessagePack, Pickle, and YAML serialization for Python