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

74Health
Library npm

http-cookie-agent

Adds tough-cookie-based cookie jar support to Node.js global fetch, undici, axios, node-fetch, and other HTTP clients.

53
MIT
Used by 3
34Health
SDK npm

sns-payload-validator

Verifies AWS SNS message signatures for HTTP/S and Lambda payloads.

13
MIT
Used by 3
67Health
Library Composer

League URI

A PHP library for parsing, building, and manipulating URIs, URNs, and URI templates

1,128
MIT
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
51Health
Library Cargo

axum-server

A hyper-based HTTP server designed to be used with the Rust axum web framework.

262
MIT
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
72Health
Library npm

style-to-object

Parses CSS inline style strings into plain JavaScript objects, powering markdown-to-jsx, react-markdown, and dozens of other rendering pipelines.

77
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

lightGallery

A modular, responsive lightbox gallery plugin for images and video, with official React, Vue, and Angular wrappers.

7,053
GPL 3.0
Used by 1
49Health
Library npm

jsts

JavaScript port of the Java JTS Topology Suite for spatial predicates, geometry operations, and OGC Simple Features processing.

1,562
Other
Used by 1
87Health
Library Cargo

rama-core

The async Service and Layer trait core that every Rama network stack builds on.

1,203
Other
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
66Health
Library Cargo

compact_str

A memory-efficient Rust string type that inlines up to 24 bytes on the stack, skipping heap allocation for common cases.

872
MIT
Used by 1
84Health
Library PyPI

primp

Python HTTP client that impersonates real browser TLS and HTTP/2 fingerprints.

598
MIT
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
46Health
Library Cargo

native-tls

A safe, ergonomic Rust wrapper over each platform's native TLS implementation.

546
Other
Used by 1
38Health
Tool npm

babel-plugin-inline-react-svg

A Babel plugin that transforms SVG file imports into optimized, inlined React components at build time.

474
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
39Health
Library Cargo

hyper-tls

A minimal HTTPS connector that pairs hyper with native-tls for secure Rust HTTP clients.

201
Apache 2.0
Used by 1
43Health
Library PyPI

python-tblib

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

184
Other
Used by 1
70Health
Library Cargo

wreq-util

Browser and OkHttp client emulation, TLS certificate compression, and delay middleware for the wreq HTTP client.

90
Apache 2.0
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