We tried multiple platforms for our company (TidyCal, Office365, SavvyCal & Calendry off the top of my head). Pro's and con's to them all but none of them come close to what we've been able to do with Trafft.

A few things that set it apart from the others are multiple integrations, multiple calendars per person, limiters, the app, better web integration than the others and customization to the max. Great deal, I almost feel bad that I paid so little and I wish I had more uses. I know this has passed, but if it ever pops up again, don't sleep on it! And in the mean time, the monthly compared to all the others is still worth it.