Flight Ops Pro
We use Flight Ops Pro and find it really good, We initially signed up for a Free trial then spoke to support and they set us up within hours and conducted some training on the platform. Not trying to plug them, but I really like Flight Ops Pro and find it to be one of the best I have seen and recommend to all.. We trialled Schlott but found it did not offer as many features as FOP. We find it really easy to use and not Clunky at all? it also does some really impressive things in the background like sms reminders and passengers manifests. We are a small FTO and Charted company and it suits us perfectly.