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
91Health
SDK PyPI

boto3

The official AWS SDK for Python — call every Amazon Web Services API from your code.

9,900
Apache 2.0
Used by 59
98Health
SDK npm

Google Cloud Storage

Node.js client library for Google Cloud Storage — upload, download, and manage buckets and objects programmatically.

3,195
Apache 2.0
Used by 59
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
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
97Health
SDK npm

@azure/identity

Microsoft Entra ID credential library that authenticates every Azure SDK client, from managed identity in production to CLI and browser login in development.

2,295
MIT
Used by 28
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
96Health
SDK Cargo

vercel_runtime

The official Rust runtime for writing and deploying serverless functions on Vercel.

16,243
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
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
93Health
SDK Go

minio-go

The official Go client SDK for MinIO and any Amazon S3 compatible object storage service.

2,998
Apache 2.0
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
57Health
Library npm

decimal.js

An arbitrary-precision Decimal type for JavaScript with full trigonometric support

7,252
MIT
Used by 12
78Health
SDK npm

minio

JavaScript SDK for MinIO and any S3-compatible object storage

1,143
Apache 2.0
Used by 12
80Health
SDK PyPI

modal-client

Deploy Python functions to serverless GPU and CPU cloud infrastructure with a single decorator.

514
Apache 2.0
Used by 10
69Health
Tool npm

@vitejs/plugin-basic-ssl

A Vite plugin that generates a self-signed certificate so your dev and preview servers can run over HTTPS with zero setup.

516
MIT
Used by 8
55Health
Library npm

superagent

A small, progressive HTTP request library for Node.js and browsers with a single fluent, chainable API on both platforms.

16,637
MIT
Used by 7
72Health
Library Cargo

ureq

A simple, safe, blocking HTTP client for Rust with minimal dependencies.

2,190
Apache 2.0
Used by 7
50Health
Library npm

follow-redirects

A drop-in replacement for Node's http and https modules that transparently follows redirects with zero runtime dependencies.

580
MIT
Used by 7
91Health
Framework npm

Pulumi

Infrastructure as Code in your favorite programming language, powered by a shared multi-language deployment engine.

25,682
Apache 2.0
Used by 6
93Health
Tool Go

nats-server

High-performance, self-hostable messaging server for NATS.io, powering pub/sub, request/reply, and JetStream persistence across cloud and edge.

20,704
Apache 2.0
Used by 6
97Health
SDK Composer

AWS SDK for PHP

Official AWS SDK for using Amazon Web Services from PHP applications

6,206
Apache 2.0
Used by 6
74Health
Library Go

certmagic

Automatic HTTPS for Go programs — the production-grade ACME client library that powers Caddy, obtaining and renewing TLS certificates with zero manual cert management.

5,598
Apache 2.0
Used by 6

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