Current Version 6.4.9 (17 December 2018):
Starting in January 2019, the most recent version of the Spin source and binary distribution
is maintained on https://github.com/nimble-code/Spin.
The github distribution includes all recent updates and bug-fixes, also in between main releases.
An archive of all Spin versions is also available at: http://spinroot.com/spin/Archive/.
Last updated: 5 July 2019