highlight.js - Highlight.js is a syntax highlighter written in JavaScript. It works in the browser as well as on the server.

HEY - Email at its best, new from Basecamp.

code-prettify - Code Prettify is an embeddable script that makes source-code snippets in HTML prettier.

Mailo - Mailo is an email client where you can send and receive emails to and from anyone with an email address.

Apache Tika - Apache Tika toolkit detects and extracts metadata and text from different file types.

Horde - Horde Groupware is a free, enterprise ready, browser based collaboration suite.