Review for ExQuilla for Exchange by animantium
Rated 5 out of 5 stars
It works great, and the price is very reasonable. It will be nice when the calendar provider is fully integrated. Without this addon I'd be stuck logging into Outlook web interface, which is pretty featureless on Linux.
As far as the complaints about it not being free, I don't see what that has to do with how good the add-on is. I prefer the donation request model, because it feels less intrusive, but I realize that can be impractical.
They could also give the user an activation key each year, so we don't have to create an account. I'm more turned off by having to give personal information, than by having to pay.
To create your own collections, you must have a Mozilla Add-ons account.