Playtomic is a set of client and server APIs for game leaderboards, user generated content, and dynamic updates. It began as a hosted service providing tools and analytics for game developers, but is now available for developers to operate on their own. It includes the API server which is written in NodeJS and backed with MongoDB, along with game client APIs for HTML5, Flash, iOS, Android, Windows, and Unity3d games.
meetmint is a meeting minutes tool for Web browsers. It lets you take short notes of various types during a meeting. It supports timing (auto-suggest breaks, log time), collecting agenda items, logging the presence/absence of attendees, reuse of attendee lists (groups), and automatic generation of summaries of todo lists grouped by persons, leftover items (for later meetings), and ideas.
Enterprise Reporting Server (Birt) aims to be a Free Software replacement for the standard Birt webviewer. Some its features are: uploading and managing Birt .rptdesign files, user accounts with role-based access controls, fine-grained permissions on reports, and scheduling of reports (using Quartz Enterprise Scheduler).
jQuery Calx is powerful yet easy to use jQuery plugin for building calculation forms or calculation tables. It parses provided formulae and performs calculations, scans for form changes and updates results automatically, and formats plain numbers into currency format, ordinal numbers, etc. It is suitable for both simple ($A+$B) formulae and complex ones such as ($I*$P*((1 + $I)^$N)) / (1 - ((1 + $I)^$N)).
MockMockWeb is a Heroku-ready Node.js-based Web application server which allows you to mock up a website in seconds. It allows you to instantly launch a website which sends an empty page (with status 200) to any request/URL and edit any page on the spot. You can also edit the layout shared throughout your website. It lets you build a mock (sometimes real) website in a request-driven interaction.