Ranked in these QuestionsQuestion Ranking
Pro Fast and doesn't require any plugins
Pro Free tier
The Free Plan offers 2 active projects with at most 300 stencils each and 5 MB of storage. This plan does not include: Master Pages, Real Time Collaboration, Privacy Settings, Unlimited Revisions, Unlimited Project Archiving and Teams.
Pro Supports 960gs
As well as a standard snap-to-grid, Moqups supports the 960 gridsystem.