iKeyMonitor Android Spy is an invisible & free Android keylogger that records keystrokes (including passwords), in/out calls, SMS, WhatsApp messages, GPS locations and website history. It also takes screenshots and send logs to appointed email box.
Generates PDF from all Windows applications (suitable for servers) with file size optimization, font embedding, PDF encryption, watermarks. Allows joining of PDF documents. Can create ZUGFeRD compatible invoices. An API is available for developers.