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

dotenv

Loads environment variables from a .env file into process.env for Node.js apps.

20,536
Other
Used by 227
62Health
Library PyPI

rich

A Python library for rendering rich text, tables, progress bars, and syntax-highlighted code in the terminal.

57,363
MIT
Used by 46
90Health
Library npm

Prisma Client

Auto-generated, type-safe database client for Node.js and TypeScript.

47,610
Apache 2.0
Used by 46
86Health
Library PyPI

typing_extensions

Backported and experimental type-hint features for Python, usable on older interpreters and ahead of the stdlib.

582
Other
Used by 45
90Health
Library PyPI

websockets

Build correct, fast WebSocket servers and clients in Python with asyncio, threading, or Sans-I/O APIs.

5,717
BSD 3
Used by 29
90Health
Library PyPI

pydantic-settings

Type-safe application settings management for Python, built on Pydantic models.

1,456
MIT
Used by 27
61Health
Library Cargo

dotenvy

A well-maintained, actively developed fork of the dotenv crate for loading .env files in Rust

1,250
MIT
Used by 19
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
62Health
Library npm

dotenv-expand

Expands variable references, command substitution, and encrypted values in dotenv-parsed .env files.

1,057
BSD 3
Used by 14
42Health
Library npm

GSAP

The industry-standard JavaScript animation library for tweening CSS, SVG, canvas, and UI with rock-solid cross-browser reliability.

28,405
Other
Used by 11
77Health
Library PyPI

Markdown

The reference Python implementation of John Gruber's Markdown, with a pluggable extension system for converting text to HTML.

4,246
BSD 3
Used by 8
94Health
Library npm

gridstack.js

A dependency-free TypeScript library for building draggable, resizable, responsive dashboard grid layouts in the browser.

9,115
MIT
Used by 7
78Health
Library Cargo

config

Layered configuration system for Rust applications with strong 12-factor support

3,209
Apache 2.0
Used by 7
34Health
Library npm

proxy-from-env

Resolves the correct proxy URL for a request by reading standard *_PROXY and NO_PROXY environment variables

73
MIT
Used by 7
75Health
Library Composer

Symfony Dotenv

Parses .env files and registers their values as environment variables for PHP applications

3,788
MIT
Used by 6
73Health
Library PyPI

OAuthLib

Generic, spec-compliant OAuth1, OAuth2, and OpenID Connect implementation for Python

2,980
BSD 3
Used by 6
37Health
Library npm

fix-path

Fix the $PATH environment variable on macOS and Linux when your app is launched from a GUI

300
MIT
Used by 6
67Health
Library PyPI

pendulum

A drop-in replacement for Python's datetime with timezone-aware objects by default and a friendlier API.

6,674
MIT
Used by 5
49Health
Library PyPI

fake-useragent

Up-to-date user-agent string faker backed by a real-world browser usage database, bundled offline.

4,050
Apache 2.0
Used by 5
90Health
Library PyPI

fpdf2

A pure-Python library for generating and manipulating PDF documents, with text, images, tables, barcodes, SVG, and digital signing built in.

1,540
Other
Used by 5
48Health
Library npm

dotenv-webpack

A secure Webpack plugin that loads dotenv variables into your bundle while exposing only what your code actually references.

1,295
MIT
Used by 5
39Health
Library npm

strip-json-comments

Strip comments from JSON strings so you can safely use JSONC config files.

625
MIT
Used by 5
23Health
Library Cargo

temp-env

Set environment variables temporarily for the duration of a closure, mainly for Rust tests.

46
Other
Used by 5
70Health
Library Go

env

A simple, zero-dependencies Go library that parses environment variables directly into struct fields using tags.

6,308
MIT
Used by 4

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