People (growing list!)
Aaron Clauset - University of Colorado, USA
Andreas Grönlund - Uppsala University, Sweden
Andrea Lancichinetti - ISI Foundation, Italy
Beom Jun Kim - Sung Kyun Kwan University, Korea
Bruno A N Travençolo - Federal University of Uberlândia, Brazil
Daniel Stouffer - University of Canterbury, New Zealand
Daril Vilhena - University of Washington, USA
Francisco A Rodrigues - University of São Paulo, Brazil
Fredrik Liljeros - Stockholm University, Sweden
Hawoong Jeong - Korea Advanced Institute of Science and Technology, Korea
Ingve Simonsen - University of Trondheim, Norway
Jari Saramäki - Aalto University, Finland
Jean-Charles Delvenne - Catholic University of Louvain, Belgium
Jevin D West - University of Washington, USA
Krzysztof Juszczyszyn - Wroclaw University of Technology, Poland
Kim Sneppen - University of Copenhagen, Denmark
Luana de F Nascimento - SCK-CEN, Belgium
Lucas Antiqueira - University of São Paulo, Brazil
Luciano da F Costa - University of São Paulo, Brazil
Martin Rosvall - Umeå University, Sweden
Naoki Masuda - University of Tokyo, Japan
Ney Lemke - University of the State of São Paulo, Brazil
Massimiliano Zanin - Innaxis Foundation and Research Institute, Spain
Petter Holme - Umeå University, Sweden
Petra Vertes - University of Cambridge, England
P G L Porta Mana - Oxford University, England
Raj Kumar Pan - Aalto University, Finland
Renaud Lambiotte - University of Namur, Belgium
Sang Hoon Lee - Umeå University, Sweden
Scott Cunningham - Baylor University, USA
Sebastian Bernhardsson - University of Copenhagen, Denmark
Seung Ki Baek - Umeå University, Sweden
Sungmin Lee - University of Trondheim, Norway
Tamás Nepusz - Eötvös Loránd University, Hungary
Vincent Blondel - Catholic University of Louvain, Belgium
Network Stuff
The igraph library - Igraph is a network/graph library with several useful functions for network research. It can be used as a C library, R package or Python and Ruby extensions
Math and Programming
The Wolfram Functions Site - Great math and physics reference web-page by Wolfram Research. Have fun with the "function of the day"
Factorial Table - Factorial table to avoid CPU-intensive calculations. Up to 256!
ILE C/C++ Run-Time Library Functions - Reference guide to several C/C++ functions by IBM, always useful
Scilab - Scilab is a numerical programing environment similar to Matlab. It's free and available for Mac, Linux, Windows and other OSs. Another plus is the small graph theory library
Gnuplot - Gnuplot is a must for plotting scientific results
Leisure
XXX - XXXX