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

86Health
Library npm

TanStack Form

Headless, type-safe form state management for React, Vue, Solid, Angular, and more

6,743
MIT
Used by 16
98Health
SDK PyPI

Azure Storage Blob

The official Python client library for Azure Blob Storage, with sync and async APIs for containers, blobs, and access tiers.

5,621
MIT
Used by 16
74Health
Library Cargo

indicatif

A Rust library for progress bars, spinners, and colored terminal output in command-line applications.

5,224
MIT
Used by 16
63Health
Library Go

backoff

Exponential backoff and retry for Go, with a generic Retry function, typed errors, and RetryAfter support for rate-limited APIs.

4,088
MIT
Used by 16
75Health
Library npm

rate-limiter-flexible

Atomic and non-atomic counters and rate-limiting tools that protect against DoS and brute-force attacks at any scale

3,596
Other
Used by 16
83Health
Library Cargo

parking_lot

A faster, smaller drop-in replacement for Rust's standard library Mutex, RwLock, Condvar, and Once.

3,434
Apache 2.0
Used by 16
59Health
Library Cargo

jsonwebtoken

Create and decode JSON Web Tokens in Rust in a strongly typed way

2,102
MIT
Used by 16
87Health
Library PyPI

pytest-mock

A pytest plugin that provides a `mocker` fixture wrapping Python's `unittest.mock`, with automatic teardown between tests.

2,040
MIT
Used by 16
94Health
Library npm

@nestjs/swagger

The official NestJS module that generates OpenAPI (Swagger) documentation from your controllers and DTOs

1,899
MIT
Used by 16
71Health
Library PyPI

greenlet

Lightweight in-process coroutines for cooperative concurrency in Python

1,852
Other
Used by 16
42Health
Library npm

CSSType

Strict TypeScript and Flow type definitions for CSS properties and values, generated from MDN data

1,816
MIT
Used by 16
91Health
Library npm

Protobuf-ES

A conformance-tested, ESM-first Protocol Buffers runtime and code generator for modern JavaScript and TypeScript.

1,676
Apache 2.0
Used by 16
86Health
Library npm

mailparser

Stream-based Node.js library for parsing raw MIME emails into structured text, HTML, headers, and attachments.

1,672
MIT
Used by 16
74Health
Library PyPI

bcrypt (Python)

A Python library for secure password hashing using the bcrypt algorithm with an adjustable work factor

1,508
Apache 2.0
Used by 16
48Health
Library npm

swagger-ui-express

Serves interactive Swagger UI API documentation directly from your Express app based on a Swagger/OpenAPI JSON or YAML document.

1,495
MIT
Used by 16
83Health
Library Cargo

env_logger

Environment-variable-configured logging backend for Rust's log crate

1,064
Other
Used by 16
93Health
SDK Cargo

aws-config

Resolves AWS credentials and shared configuration for every AWS SDK for Rust client.

686
Apache 2.0
Used by 16
64Health
Library npm

react-virtualized-auto-sizer

Measures a container's available width/height and passes it to a child component

669
MIT
Used by 16
32Health
Library npm

compare-versions

Zero-dependency semver comparison for Node.js and the browser, with support for ranges, wildcards, and Chromium-style versions.

637
MIT
Used by 16
50Health
Library npm

postcss-simple-vars

A PostCSS plugin that brings Sass-like $variables to CSS values, selectors, at-rules, and comments.

429
MIT
Used by 16
35Health
Library Cargo

mime_guess

MIME/media-type guessing from file extensions in Rust

221
MIT
Used by 16
40Health
Library npm

stream-browserify

A browser-compatible shim of Node.js core's stream module

105
MIT
Used by 16
45Health
Library npm

i18next-resources-to-backend

Turns any loader function or static resource object into a fully-formed i18next backend, so translations can be lazy-loaded via dynamic import() in Node.js, browsers, and Deno.

67
MIT
Used by 16
63Health
Library PyPI

stub_uploader

Auto-generated PEP 561 type stubs for cachetools, published to PyPI by typeshed's automated stub_uploader pipeline.

38
Apache 2.0
Used by 16

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