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

43Health
Library Cargo

ndarray-stats

Statistical routines for ndarray's ArrayBase — quantiles, correlation, entropy, and histograms as native extension traits.

237
Apache 2.0
Used by 1
42Health
Library PyPI

CommonMark.py

A pure-Python parser and renderer for the CommonMark Markdown specification

236
BSD 3
Used by 1
46Health
Library npm

@hapi/inert

Serves static files and directories in hapi.js applications with caching, range requests, and path-confinement security.

236
BSD 3
Used by 1
37Health
Library Cargo

rs-natural

A natural language processing toolkit for Rust with distance, tokenizing, and classification.

236
MIT
Used by 1
80Health
Library Cargo

foundationdb-rs

Async, runtime-agnostic Rust bindings for FoundationDB's transactional, ordered key-value store.

235
Apache 2.0
Used by 1
41Health
Library PyPI

MultiTasking

Turn any Python method into a non-blocking task with a single decorator

235
Apache 2.0
Used by 1
52Health
Library PyPI

ahocorasick_rs

A fast Aho-Corasick multi-pattern string and byte search library for Python, backed by Rust.

234
Apache 2.0
Used by 1
74Health
Library npm

cascader

A headless React cascader component for selecting values from hierarchical option trees, with search, multi-select, and async loading built in.

234
MIT
Used by 1
51Health
Library Cargo

tauri-plugin-sentry

Sentry error and crash reporting for Tauri v2 apps, unifying Rust backend and browser frontend telemetry.

234
Other
Used by 1
55Health
Library Cargo

tauri-plugin-prevent-default

Disable default browser keyboard shortcuts and context menus in Tauri desktop apps.

234
MIT
Used by 1
36Health
Library PyPI

jsonmerge

Merge a series of JSON documents into one with schema-driven, per-field merge strategies

233
MIT
Used by 1
35Health
Library Cargo

native-dialog

Cross-platform native file choosers and message boxes for Rust

233
MIT
Used by 1
36Health
Library npm

node-icalendar

iCalendar (RFC 5545) parser and generator for Node.js, with a streaming API for building and reading VCALENDAR data.

232
MIT
Used by 1
43Health
Library Composer

oooas

Object-oriented builder for generating OpenAPI specs in PHP

231
MIT
Used by 1
37Health
Library PyPI

astunparse

Converts a Python AST back into readable, re-parseable source code, plus a pretty-printing dump utility.

230
BSD 3
Used by 1
52Health
Library Composer

Twig CssInliner Extra

A Twig extension that inlines CSS styles into HTML for email-ready templates.

230
MIT
Used by 1
41Health
Library npm

IBANTools

Zero-dependency TypeScript library for validating, formatting, and extracting IBAN, BBAN, and BIC/SWIFT numbers.

230
Other
Used by 1
63Health
Library PyPI

Pyphen

A pure Python library that hyphenates text using Hunspell dictionaries, covering 50+ languages.

230
Other
Used by 1
45Health
Library npm

@hapi/cookie

Cookie-based session authentication scheme for hapi.js servers, backed by Iron-encrypted cookies.

229
BSD 3
Used by 1
53Health
Library Cargo

lazy-regex

Rust macros for regular expressions checked at compile time and compiled once via lazy statics.

228
MIT
Used by 1
56Health
Library PyPI

gitdb

Pure-Python IO for git-style object databases, streaming loose objects and packs

227
BSD 3
Used by 1
31Health
Library Cargo

serde-pickle

A Serde-based Rust library for reading and writing Python's pickle serialization format.

226
Apache 2.0
Used by 1
37Health
Library PyPI

timeago

Format Python datetimes into human-friendly '3 hours ago' relative time strings across 40+ locales.

226
MIT
Used by 1
84Health
Library PyPI

maxminddb

A Python reader for MaxMind DB (.mmdb) files used for IP geolocation lookups.

225
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