Just switched from an Atrix II to a HTC One X today and already miss the smart actions. I downloaded automateIt, but really need something to do the one thing I used smart actions for the most since I use my phone at work.
I was able to detect calendar events marked as busy as a trigger. The actions it set were:
Phone Changed to Vibrate Automatically
Any calls or texts received were sent an automated text saying I was in a meeting.
Once meeting was over, the rules and actions turned off automatically.
I also used it to determine battery state and then set brightness, syncing, data, etc.
Need something free as it is a work phone but automateIt requires a lot of rules and the free version does not allow multiple triggers. LLama is location based and most other free versions do not allow a calendar trigger.