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

tap-producing test harness for node and browsers

Headless tape test runner

Check if nested object has property

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

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

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

onename API node JS library

Headless WebKit with JS API