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

93Health
Library PyPI

Pydantic

Data validation and settings management using Python type hints, backed by a Rust core.

28,772
MIT
Used by 102
90Health
Tool PyPI

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.

49,630
MIT
Used by 46
51Health
Library npm

debug

A tiny, zero-config JavaScript debugging utility with namespaced, color-coded output for Node.js and the browser.

11,454
MIT
Used by 32
63Health
Library Cargo

console-subscriber

tracing-subscriber Layer that powers tokio-console, a debugger for async Rust

4,599
MIT
Used by 6
89Health
Tool Composer

Laravel Telescope

Official Laravel debug assistant that records requests, queries, jobs, mail, and more into a local dashboard

5,227
MIT
Used by 4
49Health
Library PyPI

prisma-client-py

Auto-generated, fully type-safe Python database client built on Prisma's schema and Rust query engine.

2,095
Apache 2.0
Used by 2
93Health
SDK PyPI

dd-trace-py

Datadog's official Python APM client for distributed tracing, profiling, and observability.

650
Other
Used by 2
85Health
SDK npm

Honeybadger for JavaScript

Universal JavaScript error notifier that reports uncaught exceptions from the browser, Node.js, and AWS Lambda to Honeybadger.io.

116
MIT
Used by 2
71Health
Library PyPI

IceCream

A Python debugging library that prints both an expression and its value, so you never have to write print("x:", x) again.

10,108
MIT
Used by 1
70Health
Library npm

Roarr

A zero-configuration JSON logger for Node.js and the browser that decouples log production from transport.

1,137
BSD 3
Used by 1
57Health
SDK npm

rollbar.js

The official cross-platform JavaScript SDK for Rollbar, capturing browser, Node.js, and React Native errors with breadcrumbs and session replay.

587
MIT
Used by 1
40Health
Library Cargo

pdb

A Rust library for parsing Microsoft PDB (Program Database) debugging information files.

467
Other
Used by 1
50Health
Library Cargo

gdbstub

A no_std-first Rust implementation of the GDB Remote Serial Protocol for debugging emulators and embedded targets.

414
Other
Used by 1
72Health
SDK Composer

rollbar/rollbar

The official Rollbar PHP SDK for error and exception monitoring and reporting.

337
MIT
Used by 1
43Health
Library PyPI

python-tblib

Serialize Python tracebacks and exceptions so they survive pickling across processes.

184
Other
Used by 1

Join founders buildingwith open source

Opinionated takes, migration guides, cost-saving tips, and insights from the open source ecosystem.

Subscribe on Substack
Join 750+ subscribers