Features:

• FET is free software (open source). You can freely use, copy, modify and re-distribute it, as GNU/GPL permits (but please consider a donation)
• Localized to English, French, Catalan, Romanian, Malay, Polish, Turkish, Dutch, German, Hungarian and Macedonian (maybe incompletely)
• Fully automatic generation algorithm, allowing also semi-automatic or manual allocation
• Platform independent implementation, allowing running on GNU/Linux, Windows, Mac and any system that Qt supports
• Powerful flexible modular xml format for the input file, allowing editing with an xml editor or by hand (besides FET)
• Possibility to view the currently generated timetable without stopping the ongoing simulation
• The resulted timetables are exported into xml and html formats
• Very flexible students (pupils) structure, in years, groups and subgroups. FET allows overlapping years and groups and non-overlapping subgroups
• Possibility to consider a weight (percentage) for each constraint
• Maximum total number of hours (periods) per day: 30
• Maximum number of working days per week: 14
• Maximum total number of teachers: 700
• Maximum total number of subgroups (sets) of students: 5000
• Maximum total number of subjects: 1000
• Virtually unlimited number of subject tags
• Maximum number of activities: 2000 (you can compile or ask the author a version with more activities allowed)
• Maximum number of rooms: 300
• Maximum number of buildings: 100
• Maximum number of equipments: 300
• Adjustable duration for each activity (each activity can have duration of 1 hour, 2 hours, 3 hours or more)
• Possibility of adding multiple teachers and students sets for each activity. That is, each activity can have specified at most 400 students subgroups (sets) and 100 teachers
• Maximum number of time constraints: 3000
• Maximum number of space constraints: 3000
• A large and flexible palette of time constraints
• A large and flexible palette of space constraints

What's New in version 5.18.0:

• Very serious old bug fix. This was found trying to implement the new constraint (see below) in such a way to solve a more complicated file by Yush Yuen. Since nobody complained, it seems that until now the bug was not critical (but might have slowed down some timetables which have rooms and preferred/home rooms constraints). Bug exists from the start of the implementation of the space allocation in FET, probably. A big 'Thank you!' to Yush Yuen, who was very helpful in finding the problem.
• Added a new constraint, activities occupy max different rooms (which can, for example, constrain some activities to be in the same room (in different time slots, of course) if max different rooms = 1). Suggested by Yush Yuen, nomad, Volker Dirr and maybe others.
• Safe saving of .fet files (save with .fet.tmp name, then remove old .fet file, then rename .fet.tmp to .fet).
• Saving of the random seed after the end of the generation (in addition to saving it at the beginning).
• Added an Uzbek translation, by Orzubek Eraliyev.