Arignote Timetable is automatic timetabling software for primary and secondary schools, vocational centres, colleges and universities. You enter your daily time structure, courses and groups, subjects with their weekly sessions, teachers with their availability, and rooms; press Check to find conflicts and Solve to let the constraint solver place every lesson without clashes. The built-in demo school (41 teachers, 20 classes, 418 weekly lessons) is solved in about two seconds on a recent computer. It handles part-time teachers, preferred or forbidden slots, specialist rooms, electives and different daily schedules per year group. Arignote imports from FET, Untis, aSc TimeTables, Peñalara GHC, Additio and PlanIt, and exports timetables per teacher, group and room as PDF, Excel or HTML. Native apps for Windows, macOS, Linux, iPad and Android, in eight languages, with EU data hosting. Free plan with no time limit.