Styleintelligence

Stamped is really excellent and have responsive support. However, we just found out we have been paying for a service that is not fit for our purpose because all our products are free to download (we are a publisher). So, Stamped is great unless your products: a) have a price of $0.00 b) have negative inventory So, for the reason that we have just found out a + b after using Stamped for years, we're giving it a low rating. I doubt they will refund us, but they should really let users know that this is the case before signing up. We only found out after persisting with multiple emails to support.

Its free. Ok. Does what it says on the tin. I have used for over a year with great results. Can track downloads and see who has downloaded what, but it is a bit clunky. Would love improved tracking and analysis. Neater layout options for non technical person would also help.