How many employees can I add?

How many employees can I add in Manager? Can anyone tell me is this software free forever?

So far as I know, there is no limit on number of employees.

If you are using the desktop version, Manager will be free forever. No limit on number of transactions, time span, or anything else. @lubos has adopted a “freemium” business model, where the desktop version is free and premium versions (server and cloud) cost money.