For universities and departments
One plan for your whole department, not a license per seat
Athanor’s drawing, ChemDraw files, animated mechanisms and problem sets are free for every student and instructor. arbastro Suite Ultra adds what a department runs centrally: an organization with its domains and admins, LTI 1.3 for your learning system, and classes with no limit on students.

Free for students
Students draw, open and save ChemDraw CDX and CDXML, animate mechanisms and hand in problem sets on the Free plan, in the browser or on Windows. Nobody needs a seat license to take your course.
Your learning system
LTI 1.3 for Canvas, Moodle, Blackboard and Brightspace, so assignments open from the course page. Every plan can also export sets as Moodle XML or QTI 2.1.
An organization you control
Departments, your email domains and up to 5 admins, unlimited classes with no limit on students per class, and an activity log kept for as long as the organization exists.
arbastro Suite Ultra
$99.99 a month, or $999.99 a year, for the whole organization. Compare the plans.
