http://www.sagemath.org./

Uber editor by Bram Moolenaar. Stands for ‘vi mproved,’ alluding to its heritage from the first visual editor (vi == visual) for Unix.

Key mappings and tips

• K — in normal mode, does a man of the word under the cursor.

Resources

• wikied
  a set of scripts for wiki-style editing with vim
• Vim Cookbook
  some “Recipes” for doing simple — and not so simple — things in vim
• Mastering the vi editor
  From the University of Hawaii, a fine introduction to vi, all of which should apply to vim
• A Markdown syntax file for vim
• vim for PHP programmers, a great slideshow of vim tricks, with focus on editing PHP source.
• (useful) Stupid vim tricks from Slashdot
• Configuring vim right
  Some tips on stuff to put in your .vimrc file

http://www.freenas.org/

The GNU Image Manipulation Program (GIMP) is an open-source bitmap graphics editor. While it aspires to be an alternative to Adobe’s Photoshop, it has an incredibly quirky interface and is often cited as an example of what’s wrong with open source/free software, as it is an incredibly powerful program hiding behind a decidedly new-user-unfriendly interface.

The GIMP provides most of my graphics needs. As I’ve never used Photoshop, I do not mind the interface quirks and am used to them by now.

The GIMP is also a historic part of open source. During its creation, the authors decided to uncouple the UI controls from the program proper, creating what they called the Gimp Toolkit. What is now known as the GTK is at the heart of the GNOME open source desktop and lots of gui software for Linux.

Ports and Versions

• GIMPshop is a project that attempts to rearrange the interface to be more like Photoshop

Resources

• Removing backgrounds in the GIMP
• A set of tutorials on creating “Web 2.0” style graphics: ‘wet-floor’ shadows, emblems, gradient buttons, and the like.
• How to convert your digital photos into realistic photo prints. This is a Photoshop tutorial, but it should work with the GIMP.

http://www.wikihow.com/Make-OpenCola

http://reduxcomputing.com/proximity.php

Disk Inventory X is a utility for Mac OS X that graphically shows the type and size of the files on your hard disk. It is invaluable for finding where your disk space went, particularly if it happened suddenly:

Note the above 18GB log file.

Resources

• Disk Inventory X Official Home Page

http://applications.linux.com/applications/07/03/08/1839232.shtml?tid=39