PureBasic v5.20 LTS released on September 15, 2013.

This Rockstar release is an LTS. As the Team stated:

We would like to thanks again all the beta testers who found tons a issues and all the help we got from various people, especially on the doc side ! This a LTS (Long Term Support) release, so it will be bug fixed for 2 years until 17th September 2015, while the command-set and compiler functions won’t be modified.
Have fun coding, The Fantaisie Software Team.

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PureBasic has a very generous licensing: buy a license ONCE and you get PureBasic for all supported OS for all will be released version. And, all older releases also.

Find it yourself, make sure to buy a license 🙂