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

42Health
Library npm

clsx

A tiny, fast utility for conditionally constructing className strings

9,838
MIT
Used by 256
87Health
Library npm

tailwind-merge

Merge Tailwind CSS classes without style conflicts

5,688
MIT
Used by 218
76Health
Library npm

Lodash

A modern JavaScript utility library delivering modularity, performance, and extras for arrays, objects, and functions.

61,278
MIT
Used by 194
75Health
Library npm

Radix UI

Unstyled, accessible React UI primitives for building your own design system.

19,268
MIT
Used by 181
72Health
Library npm

uuid

RFC9562-compliant UUID generation for JavaScript and TypeScript.

15,326
MIT
Used by 172
44Health
Library npm

cmdk

Fast, unstyled command menu and combobox primitives for React.

12,969
MIT
Used by 133
91Health
Library npm

Recharts

A composable charting library for React, built on D3 and SVG.

27,555
MIT
Used by 127
74Health
Library npm

globals

A single JSON file of global identifiers for every JavaScript environment, used by ESLint and other static analysis tools.

610
MIT
Used by 125
93Health
Library npm

TanStack Table

Headless, type-safe tables and datagrids for React, Vue, Solid, and more.

28,426
MIT
Used by 116
64Health
Library npm

Sonner

An opinionated, animated toast notification component for React with a tiny imperative API.

12,968
MIT
Used by 116
87Health
Library npm

nanoid

A tiny, secure, URL-friendly unique string ID generator for JavaScript and TypeScript

26,969
MIT
Used by 113
66Health
Library npm

semver

The semantic version parser and range matcher that powers npm itself.

5,465
Other
Used by 112
75Health
Library Cargo

serde_json

The de facto standard JSON library for Rust, built on the Serde serialization framework

5,636
Apache 2.0
Used by 111
76Health
Library Cargo

serde

A generic framework for serializing and deserializing Rust data structures efficiently and safely.

10,825
Other
Used by 108
82Health
Library npm

dnd-kit

A lightweight, extensible React library for building accessible drag-and-drop interfaces.

17,627
MIT
Used by 107
45Health
Library Go

uuid

Dependency-free RFC 9562 UUID generation and parsing for Go, with built-in SQL and encoding support.

6,144
MIT
Used by 103
82Health
Library npm

js-yaml

A fast, complete YAML 1.2 and 1.1 parser and serializer for JavaScript.

6,630
MIT
Used by 101
90Health
Library npm

yaml

A definitive TypeScript parser and stringifier for YAML, supporting 1.1 and 1.2 with comment and CST access.

1,691
Other
Used by 98
45Health
Library npm

next-themes

Perfect dark mode for React and Next.js apps in two lines of code, with zero flash on load.

6,338
MIT
Used by 97
70Health
Library npm

react-day-picker

A lightweight, fully customizable date picker component for React applications.

6,852
MIT
Used by 96
51Health
Library npm

jsonwebtoken

The de facto Node.js library for signing, verifying, and decoding JSON Web Tokens.

18,196
MIT
Used by 93
42Health
Library npm

rimraf

Cross-platform recursive file and directory removal for Node.js, modeled on the UNIX `rm -rf` command.

5,848
Other
Used by 87
56Health
Library npm

fs-extra

Drop-in replacement for Node's fs module adding copy, remove, mkdirs, and JSON helpers with native promise support.

9,589
MIT
Used by 84
58Health
Library npm

glob

The most correct and second-fastest shell-style file pattern matching library for Node.js.

8,711
Other
Used by 84

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