What or who is FastSpring? Maarten Huijs October 12, 2018 10:09 Updated Follow FastSpring is Our authorised reseller, payment provider & subscription manager. Related articles Does fmversion.com offer a free trial? Can I upgrade my account from a ‘single user subscription’ to a ‘business or enterprise’ account? How does FM version manage changes between FM Pro versions? Does FM Version show me all the changes between solutions? Comments 0 comments Please sign in to leave a comment.