Simple Calendar - A simple calendar with events (optional recurring and reminders), week numbers and a customizable...
Duplicati - Free backup software to store backups online with strong encryption. Works with FTP, SSH, WebDAV, OneDrive, Amazon S3, Google Drive and many others.
Calendar Lock PEA - Calendar Lock PEA is an encrypted desktop calendar with a day, week and month view. The shown calendars are never stored unencrypted on your disk, but exist only in the RAM. Platform-independent, Open Source, no installation or registration required.
Attic Backup - Attic is a deduplicating backup program written in Python.
GMinder - GMinder is an open source Windows System Tray app that pops up to remind you about Google Calendar events.
Acronis Cyber Protect Home Office - (Formerly Acronis True Image) Complete protection for your digital life