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

34Health
Library PyPI

uncurl

Convert curl commands into equivalent python-requests code, from a CLI or a small Python API.

668
Apache 2.0
Used by 1
41Health
Library npm

react-use-wizard

Zero-dependency React wizard and stepper builder powered by hooks

662
MIT
Used by 1
85Health
Library PyPI

DataComPy

Compare Pandas, Polars, Spark, and Snowpark DataFrames with human-readable difference reports.

660
Apache 2.0
Used by 1
91Health
Library Cargo

llama-cpp-2

Safe, up-to-date Rust bindings to llama.cpp for local LLM inference

657
Apache 2.0
Used by 1
36Health
Library PyPI

bashlex

A Python port of GNU bash's own parser that turns shell command lines into a full abstract syntax tree.

650
GPL 3.0
Used by 1
41Health
Library Composer

PSR Clock

The PSR-20 standard interface for reading the current time in PHP.

649
MIT
Used by 1
45Health
Library npm

formula-parser

A JavaScript library that parses and evaluates Excel-style formulas and mathematical expressions.

648
MIT
Used by 1
45Health
Library Cargo

yaml-rust

A pure Rust YAML 1.2 parser and emitter with a dynamic Yaml enum and panic-free indexed access.

647
Apache 2.0
Used by 1
37Health
Library PyPI

django-user_agents

Django middleware that parses browser, OS, and device info from every request's user agent string.

646
MIT
Used by 1
44Health
Library npm

crypto-hash

Tiny isomorphic hashing module that uses the native crypto API in Node.js and the browser.

645
MIT
Used by 1
33Health
Library Cargo

pico-args

An ultra-simple, zero-dependency CLI arguments parser for Rust with a tiny binary footprint.

645
MIT
Used by 1
42Health
Library Cargo

sodiumoxide

Type-safe Rust bindings to the libsodium (NaCl) cryptography library.

644
Apache 2.0
Used by 1
50Health
Library Cargo

gltf

A Rust crate for loading glTF 2.0 3D scenes, models, and assets

643
Apache 2.0
Used by 1
48Health
Library PyPI

Flask-Mail

A lightweight Flask extension that adds SMTP email sending to your application with a simple Message API.

642
BSD 3
Used by 1
39Health
Library Composer

Intervention Image Cache

Caching extension for Intervention Image that stores manipulation results to avoid re-processing.

636
MIT
Used by 1
89Health
SDK PyPI

msgraph-sdk-python

Auto-generated, fully-typed Python client for the Microsoft Graph v1.0 API, with async-first requests and fluent path navigation.

633
MIT
Used by 1
78Health
Library PyPI

django-q2

A multiprocessing distributed task queue for Django, with schedules, cron, and pluggable brokers.

631
MIT
Used by 1
64Health
Library PyPI

django-otp

A pluggable framework for adding two-factor authentication to Django using one-time passwords.

630
Other
Used by 1
83Health
Library Composer

Symfony Workflow

Model finite state machines and Petri-net workflows in PHP with guards, transitions, and events.

630
MIT
Used by 1
76Health
Library PyPI

cloudpathlib

pathlib-style Python classes for S3, Google Cloud Storage, and Azure Blob Storage

629
MIT
Used by 1
72Health
Library PyPI

Loky

A robust, cross-platform reusable process pool executor for Python, built as the parallel backend for joblib.

629
BSD 3
Used by 1
66Health
Library Composer

scssphp

A pure-PHP SCSS/Sass compiler with no native extension dependency

629
MIT
Used by 1
38Health
Library PyPI

msoffcrypto-tool

Python library and CLI for decrypting and encrypting password-protected Microsoft Office documents across OOXML and legacy binary formats.

626
MIT
Used by 1
65Health
Tool PyPI

django-migration-linter

Detects backward-incompatible Django migrations before they break deploys, CI, or zero-downtime rollbacks.

622
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