Most interesting free and opensource software of October:
SynciOS can be used as alternative to iTunes to transfer content between iPod/iPhone/iPad and PC.
NextPVR is a popular free personal video recorder application and provides great features like series recordings, web scheduling, playing music, video and image files, Kodi/XBMC integration etc…
MailStore Home is a software that can create a central archive for all emails, various email clients are supported as well Internet mailboxes.
Viivo is a multiplatform (Windows, Mac, Android, iOS) software that encrypt your files before they sync to cloud services (Dropbox, Box, Google Drive, OneDrive)