Kate Russell's weekly review of websites and apps.
is an open source web and tablet application for students learning about Euclidean geometry and function plotting.
VideoLAN's VLC media player has gained a reputation for being able to crunch through pretty much any type of media file and now it has been ported across to Android with the free app, VLC Beta.
is a social GPS navigation app for iPhone and Android that now offers real-time fuel prices as well as driving directions to find a filling station en route.
is a productivity dashboard for social collaborators, letting you easily set up and manage multiple projects with any number of people invited to help out through Facebook, Twitter or email.
Online education site
announced this week that 17 new universities have signed up to offer free online courses, covering areas like music, medicine and humanities.