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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tsx
A drop-in replacement for the node CLI that runs TypeScript and ESM files instantly, powered by esbuild.
ts-node
TypeScript execution engine and REPL for Node.js that runs .ts files directly, without a separate compile step.
tslib
The runtime library that houses TypeScript's compiler helper functions so your emitted code stays small.
vercel_runtime
The official Rust runtime for writing and deploying serverless functions on Vercel.
Valibot
Modular, type-safe schema validation library with bundle sizes starting under 1KB
regenerator-runtime
The runtime library that powers Babel-compiled ES6 generator and async/await functions in ES5 environments
Lingui
A readable, 2kb internationalization runtime for JavaScript with ICU MessageFormat and rich-text support.
@e2b/code-interpreter
JavaScript/TypeScript SDK for running AI-generated code in stateful, isolated E2B cloud sandboxes
next-runtime-env
Populate Next.js environment variables at runtime instead of build time
wazero
Zero-dependency WebAssembly Core 1.0/2.0 runtime for Go, embedding Wasm modules with no CGO via an interpreter or AOT compiler.
Symfony Runtime
Decouples PHP applications from global state and framework bootstrapping conventions
wasmer
A fast, secure WebAssembly runtime crate for embedding sandboxed Wasm and WASIX modules directly inside Rust programs.
io-ts
A TypeScript runtime type system that derives static types and runtime decoders/encoders from one composable schema.
NVIDIA NCCL
Optimized primitives for collective multi-GPU and multi-node communication
kube
The Rust client and controller runtime for building Kubernetes operators