blockstack/blockchain-auth-js

For encoding to/from base64urls

EC cryptography

Rigorous implementation of RFC4122 (v1 and v4) UUIDs.

Bare bones Promises/A+ implementation

Simplified HTTP request client.

browser-side require() the node way

Headless WebKit with JS API

tap-producing test harness for node and browsers

Check if nested object has property

node.js library for encoding, decoding, and verifying JSON Web Tokens (JWTs)

Library for encoding ECDSA private keys to PEM, DER and raw hex formats

A key system based around accounts that each have hierarchical deterministic (HD) keychains with ECDSA public/private keypairs (the ones Bitcoin uses).

onename API node JS library

Headless tape test runner