Command-line

Jsonf - A Unix-y utility for formatting JSON in a more stream-friendly way.

Rpubsub - Simple command-line utilities for Redis pubsub.

First Five - A nice little script to run in your first five minutes on any server.

Web

Accelerator - A React view engine for Express which supports client-side mounting.

What the Code - For that bad ass one-liner you just wrote.

Papers I Love - A simple system for navigating and viewing academic papers.

Hubot

Synapse - Uses redis pub-sub to allow Hubot to incorporate scripts written in other languages.