Directory

Open Source Packages

Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.

5929 packages

All Packages

92Health
Framework PyPI

LangChain

The most widely adopted Python framework for building LLM-powered agents and applications

146,323
MIT
Used by 21
73Health
Library PyPI

loguru

A drop-in replacement for Python's standard logging module that makes logging enjoyable, with almost no setup required.

24,105
MIT
Used by 21
97Health
Library PyPI

Matplotlib

Python's foundational plotting library for static, animated, and interactive charts

23,216
Other
Used by 21
93Health
Framework PyPI

Starlette

A lightweight ASGI framework/toolkit for building async web services and apps in Python

12,618
BSD 3
Used by 21
91Health
Library Go

testcontainers-go

Programmatically spin up disposable Docker containers for Go integration and smoke tests, then tear them down automatically.

4,976
MIT
Used by 21
69Health
Library Go

semver

A fast, spec-compliant Go library for parsing, comparing, and sorting semantic versions with npm-style range constraints.

1,440
MIT
Used by 21
89Health
Library PyPI

filelock

A platform-independent file lock for Python that supports the with-statement.

972
MIT
Used by 21
83Health
Framework PyPI

Flask

A lightweight WSGI web framework for Python that scales from a single file to complex applications.

74,737
BSD 3
Used by 20
84Health
Library npm

http-proxy-middleware

The one-liner Node.js proxy middleware for connect, express, next.js, hono, and more.

11,126
MIT
Used by 20
87Health
SDK PyPI

docker-py

Official Python library for the Docker Engine API — manage containers, images, networks, and Swarm clusters from your own code.

7,213
Apache 2.0
Used by 20
45Health
Library PyPI

markupsafe

Escapes untrusted strings for safe use in HTML and XML markup, preventing injection attacks in templated output.

697
BSD 3
Used by 20
70Health
Library PyPI

orjson

A fast, correct, Rust-backed JSON library for Python with native dataclass, datetime, and numpy support

8,228
Apache 2.0
Used by 19
49Health
Library PyPI

tomli

A lil' TOML parser for Python — fast, spec-compliant, and dependency-free.

570
MIT
Used by 19
92Health
Framework PyPI

LangGraph

A low-level orchestration framework for building stateful, multi-actor LLM agents as graphs

41,635
MIT
Used by 18
93Health
Framework Go

urfave/cli

A declarative, dependency-free Go package for building fast, friendly command-line tools.

24,235
MIT
Used by 17
98Health
SDK PyPI

Azure Container Service Management (Python)

Provision and manage Azure Kubernetes Service and container clusters from Python.

5,600
MIT
Used by 17
48Health
Library npm

forge

A native, pure-JavaScript implementation of TLS and PKI cryptography for building crypto-based Node.js and browser apps.

5,331
Other
Used by 17
91Health
Library Go

goldmark

A CommonMark-compliant Markdown parser and renderer for Go, built around a walkable AST and pluggable extensions.

5,017
MIT
Used by 17
52Health
Library Go

pty

A minimal, dependency-free Go library for opening and managing Unix pseudo-terminals.

2,093
MIT
Used by 17
49Health
Library Go

go-isatty

Cross-platform Go library that detects whether a file descriptor is connected to a terminal, including Cygwin and MSYS2 ptys on Windows.

924
MIT
Used by 17
91Health
Library PyPI

Celery

Distributed task queue for running asynchronous jobs, scheduled work, and complex workflows across Python applications at scale.

28,883
BSD 3
Used by 16
95Health
Tool Go

grpc-gateway

A protoc plugin that generates a reverse-proxy server, turning RESTful HTTP/JSON requests into gRPC calls from the same service definitions.

20,003
BSD 3
Used by 16
77Health
Library Go

lipgloss

Lipgloss brings a CSS-like, declarative styling API to Go terminal apps, covering colors, borders, layout, and compositing for building polished TUIs.

11,830
MIT
Used by 16
47Health
Library Go

go-cache

A thread-safe, in-memory key-value cache for Go with per-item expiration, atomic counters, and optional disk persistence.

8,845
MIT
Used by 16

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