Me to currently using swift key as it came preinstalled but its owned by Microsoft.

I use net guard to stop basically everything in my phone from contacting the Internet.

I believe the 'AnySoftKeyboard' is a good opensource alternative for Android, no?

Gesture typing (swipe) is still in beta and didn't work much the last time I checked. I'm posting this by swiping on SwiftKey. I've been using swiping keyboards since 2011 and I won't go back to tapping buttons.