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

92Health
Library npm

undici

A fast, spec-compliant HTTP/1.1 client for Node.js, built from scratch with zero runtime dependencies

7,695
MIT
Used by 70
69Health
Library npm

JSZip

Create, read, and edit ZIP files directly in JavaScript, in the browser or Node.js.

10,383
Other
Used by 65
93Health
Library PyPI

urllib3

A powerful, user-friendly HTTP client for Python with thread-safe connection pooling, TLS verification, and retry handling.

4,058
MIT
Used by 48
68Health
Library npm

proxy-agent

Maps HTTP, HTTPS, SOCKS, and PAC proxy protocols to the correct Node.js http.Agent implementation automatically.

1,161
MIT
Used by 47
90Health
Library npm

Prisma Client

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

47,610
Apache 2.0
Used by 46
75Health
Library npm

file-type

Detect the file type of a buffer, stream, or file by reading its magic number.

4,326
MIT
Used by 44
59Health
Library npm

Archiver

A streaming Node.js library for generating ZIP and TAR archives on the fly

2,977
MIT
Used by 40
92Health
SDK npm

@clickhouse/client

The official TypeScript client for connecting Node.js applications to ClickHouse over HTTP.

331
Apache 2.0
Used by 38
44Health
Library npm

fflate

High-performance DEFLATE, GZIP, Zlib, and ZIP compression for JavaScript in an 8kB package.

3,009
MIT
Used by 35
92Health
Library Go

compress

A Go compression toolkit with a pure-Go Zstandard codec, S2 (a faster Snappy), and assembly-accelerated drop-in replacements for gzip, zip, zlib, and lzw.

5,635
BSD 3
Used by 27
85Health
Library npm

ADM-ZIP

A pure JavaScript zip compression library for Node.js, with no native dependencies

2,182
MIT
Used by 25
89Health
Library Cargo

zip

A Rust library for reading and writing ZIP archives with broad compression and encryption support

351
MIT
Used by 24
84Health
Library npm

http-proxy-middleware

The one-liner Node.js proxy middleware for connect, express, next.js, hono, and more.

11,126
MIT
Used by 20
67Health
Library Cargo

itertools

Extra iterator adaptors, methods, and macros extending Rust's standard Iterator trait

3,169
Apache 2.0
Used by 18
48Health
Library npm

forge

A native, pure-JavaScript implementation of TLS and PKI cryptography for building crypto-based Node.js and browser apps.

5,331
Other
Used by 17
41Health
Library npm

yauzl

A correctness-focused, streaming unzip library for Node.js

824
MIT
Used by 17
84Health
Library npm

got

Human-friendly and powerful HTTP request library for Node.js, with retries, streams, pagination, and RFC 7234 caching built in.

14,940
MIT
Used by 15
91Health
Framework Go

Echo

A minimalist, high-performance Go web framework with a radix-tree router, built-in middleware chain, and first-class HTTP/2 support.

32,705
MIT
Used by 13
72Health
Library npm

node-unzipper

A streaming zip extraction library for Node.js that supports random access to files on disk, in buffers, over HTTP, or on S3 without buffering the whole archive.

475
MIT
Used by 12
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
46Health
Library Go

msgpack

A reflect-based MessagePack encoder and decoder for Go with struct tag support, custom extensions, and a sync.Pool-backed API for allocation-light serialization.

2,678
Other
Used by 10
89Health
Library PyPI

msgspec

A fast, zero-cost serialization and validation library for JSON, MessagePack, YAML, and TOML in Python.

4,105
BSD 3
Used by 8
48Health
Library Cargo

rmp-serde

Serde-powered MessagePack serialization and deserialization for Rust

1,421
MIT
Used by 8
55Health
SDK npm

msgraph-sdk-javascript

Official Microsoft Graph JavaScript SDK for calling the Graph API from Node.js and the browser.

833
MIT
Used by 8

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