Unix software installed on lab machines
Text editors
Emacs - super-configurable editor and development environment
Vi - light-weight text editor
IDLE - Python's Integrated Development Environment
Kate - text editor with good gui
Document editors
LaTeX - markup language for layout of technical documents
OpenOfficeOrg - Word processing, presentations, drawings, etc.
KOffice - KDE Office suite
Languages and their libraries, compilers, etc
Python - python
Perl - perl
Prolog - prolog
gcc - Gnu compilers gcc and g++, for C and C++ code
Java - JRE and Gnu compiler gcj, for Java code
Taggers and parsers
Classifiers
Weka - data mining software
Rainbow - text classification software
Timbl - memory-based learner
Classify - maxent classifiers classify and estimate
C4.5 - decision tree classifier
Orange - python-based data mining framework
Corpus search
Grep - text search utility
CorpusQueryProcessor - cqp concordancer
GATE
Other things
GnuCoreUtils - sort, uniq, diff, find, cat, etc.
Gimp - GNU image manipulation program
R - R statistical language and environment
HarvestMan - web crawler
ThirdPartySoftware - all third-party software installed in /opt