My group in 2014,
far left Liran Sharir,
center front Omri Adler,
far right back row, Amihai Silverman
whose codes or images are featured here.
Algorithm (where appropriate).
Interface (how smoothly it runs).
Graphics (where appropriate),
Help files (compulsory).
Accessibility of software (does it run on several platforms). Overall presentation.
Downloadable software, and ease of download.
Default examples and parameters.
Before handing in try the routines out on a classmate, friend etc to check for bugs when the user is not yet an expert on the interface.
Hebrew sites (allowed for Scence Education students) must include one page in English to explain what they are about.
I do not take off points for poor English, but try to edit sites I might want to include in presentations or papers.