I’ve used all of the ones mentioned on here and would recommend Tachomaster for the small operator. Pitstop is good if you have a large number of vehicles as it’s bought outright and there is no subscription fee. Soloplus only really interprets the card information, and does not analyse it. You need the Smartanalysis system from them for analysis, which is also a system that Novadata use. Tachomaster is £1 per driver and 50p per vehicle per week and really easy to use with both PC client and web versions of your data.