AptDiff - AptDiff is a visual text / binary files comparison and merging utility for Windows.
Wickr - Wickr is a free end-to-end encrypted text, video, picture and voice messenger with full sender...
CompareMerge - CompareMerge is a software tool for file comparison and merging text-like files. It is useful for determining what has changed between versions, and then merging changes between...
Confide - On the off chance that you need to get your messages private and encoded then utilize Confide that will fill in as your own and classified courier.
WinMerge - WinMerge is an open source differencing and merging tool for Windows.
Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.