ColorOracle - Software that takes the guesswork out of checking for colour blind friendly design.
Doodle - A service to find free time slots between multiple people. It is great for organising meetings and events.
My Peers - A lightweight Mac application that updates you when particular researchers that interest you publish something new.
Unix and Perl for Biologists - An excellent way to get started learning Unix and Perl for common bioinformatic tasks, written by biologists for biologists.
I setup the sexChr_papers twitter bot following Rob Lanfear's instructions.
I am interested in papers on sex chromosome evolution, so I am removing most of the medical literature with the following search terms in pubmed
Casey Bergman is gathering all paper related Twitter bots here.