Celcat Timetabler - Celcat Timetabler is the complete, state of the art solution for optimising resource utilisation, timetable publication, ad-hoc room booking, attendance tracking, pay claim management...
Reftab - Free asset management software with check in check out. Track assets with custom asset tags and mobile apps. Supports handheld scanners for quick item check out.
Kairos Calendar - a fully open-source FOREVER continuation of PHPScheduleIt/BookedScheduler All the features without the SaaS takeover.
OpenMAINT - openMAINT manages movable assets, the real estate, and the related maintaining, logistic and economic activities, GIS and BIM
ADE - Resource management and constrained activity scheduling.
AssetTiger - AssetTiger is a free community service and cloud-based asset management tool.