Pretty cool information organizer

Very nice and free scientific plot program for Mac OS X.

Ruby for Scientific Research and Computation

Cool multi-dimensional array class with methods for Ruby. Let's turn Ruby into J :)

IBM's DB2 Express-C database -- freely available.

Nice tool for cleaning out your Services menu

Cool app that tracks which files relate to which, based on projects -- even tracking "cut & paste" chains of dependencies.

Reasonable, even-handed review of DEVONthink vs. Evernote

Cool little webservice to share chats. Not private, though.

Nice little quick chat service

Handy guide to creating extensions for Mozilla-based tools.

Nice compendium of graphing/charting technologies for Rails apps.

Free, open-source planetarium, with realistic 3D sky for multiple OSes.

Free CSS templates

An apparently high-quality CD reader, with superb error-correction.

Very cool Javascript library

Great JS library. My dev team uses it for lots of our web projects.

Yet another Lisp clone..

Yet another Lisp clone -- but this one is based on Java, JVM, and incorporates functional programming -- like function signature matching -- and some features of OO languages, like class inheritance.

Another JS table sorter. Looks very clean

We're using BannerZest for some of our web banners. Makes creating banners fun!

Nice media management and creation tools for Mac OS X.

Very cool open-source tool for graph visualization -- you define the nodes, and graphviz does the rest -- with automatic layout

Graph visualization is a way of representing structural information as diagrams of abstract graphs and networks. Automatic graph drawing has many important applications in software engineering, database and web design, networking, and in visual interfaces for many other domains. Graphviz is open source graph visualization software. It has several main graph layout programs. See the gallery for some sample layouts. It also has web and interactive graphical interfaces, and auxiliary tools, libraries, and language bindings. The Mac OS X edition of Graphviz, by Glen Low, won two 2004 Apple Design Awards. The Graphviz layout programs take descriptions of graphs in a simple text language, and make diagrams in several useful formats such as images and SVG for web pages, Postscript for inclusion in PDF or other documents; or display in an interactive graph browser. (Graphviz also supports GXL, an XML dialect.) Graphviz has many useful features for concrete diagrams, such as options for colors, fonts, tabular node layouts, line styles, hyperlinks, and custom shapes. In practice, graphs are usually generated from an external data sources, but they can also be created and edited manually, either as raw text files or within a graphical editor. (Graphviz was not intended to be a Visio replacement, so it is probably frustrating to try to use it that way.)

The best DB GUI I've used.

Navicat is a GREAT tool for creating and managing, even just browsing your SQL DB. It supports SSH tunnels, so you can do the work over the Internet securely, through multiple firewalls.