- Gnuplot A very powerful graphing utility. Along side GCC and Perl, this is the tool I use most.
- Textmate A very nice editor for the OS X, and is my current primary editor.
- Bbedit A very nice editor for the OS X, and was used to create my web site.
- Scribes A very nice editor for Linux and other unixes that use Gnome.
- Emacs A very nice editor for Unix, as is something that is on most systems.
- Carbon Emacs a carbon version for OS X.
- XEmacs emacs with scalable fonts and a nicer interface, X11.
- XEmacs -- OS X emacs with scalable fonts and a nicer interface, OS X.
XML and W3C resources
- XML -- eXtensible Markup Language
- XML Schema -- XML Schema language
- Relax NG -- A less complex, yet highly functional schema language
- Trang -- A utility for converting between DTD, XML Schema, and Relax NG.
- libxml2 -- The Gnome projects XML library and support tools, extensive and portable.
- pyXML -- Python's XML module.
- Tgif In the Unix world everyone is stuck on Xfig, but I have found tgif has a much nicer user interface.
- xv A very fast and efficient image viewer and manipulator for various Unixes, but not entirely free.
- Canvas A powerful OS X illustration program that is at times both very frustrating and very useful.
- POV-Ray A very well designed 3D rendering package that is also free. Note, this software is primarily programming language driven, thus might not be viable for the coding challenged.