Open Source Packages
Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.
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posthog-js
The official browser SDK for PostHog — autocapture, session replay, feature flags, and surveys in one drop-in script.
undici
A fast, spec-compliant HTTP/1.1 client for Node.js, built from scratch with zero runtime dependencies
Pillow
The friendly PIL fork that adds image processing capabilities to Python
urllib3
A powerful, user-friendly HTTP client for Python with thread-safe connection pooling, TLS verification, and retry handling.
proxy-agent
Maps HTTP, HTTPS, SOCKS, and PAC proxy protocols to the correct Node.js http.Agent implementation automatically.
@clickhouse/client
The official TypeScript client for connecting Node.js applications to ClickHouse over HTTP.
ua-parser-js
Detects browser, engine, OS, CPU, and device type from a User-Agent string or Client Hints, in browsers and Node.js.
asyncpg
A fast PostgreSQL database client library for Python built directly on asyncio, implementing the PostgreSQL binary wire protocol natively for high-throughput async applications.
http-proxy-middleware
The one-liner Node.js proxy middleware for connect, express, next.js, hono, and more.
Vercel Analytics
Privacy-friendly page-view and custom-event tracking for apps deployed to Vercel.
forge
A native, pure-JavaScript implementation of TLS and PKI cryptography for building crypto-based Node.js and browser apps.
got
Human-friendly and powerful HTTP request library for Node.js, with retries, streams, pagination, and RFC 7234 caching built in.
Echo
A minimalist, high-performance Go web framework with a radix-tree router, built-in middleware chain, and first-class HTTP/2 support.
pyparsing
Build recursive-descent parsers in Python without a separate grammar file
Segment Analytics-Next
Segment's flagship JavaScript SDK for capturing and routing customer data