This is the 'absolutely' free personal version of PTC's "CoCreate Modeling" and called "CoCreate Modeling Personal Edition" It is not a time limited shareware or time-limited subscription. It is a complete freeware and based on the same superior modeling technology "Explicit Modeling". like the commercial version "CoCreate Modeling"
It works with an active internet connection, but the user needs to be in the internet only once every 72 hours . This means just go for 1 second to internet and then you don't need any internet access more in the next 72 hours.
The strong Explicit modeling engine is the same like the commercial version, therefore it is really a good opportunity.
For downloading please go to PTC's PE download page