Gboard - Google-powered keyboard with search, GIFs, emojis and more!
Fleksy - Fleksy is the #1 private, white-label virtual keyboard SDK, enabling companies to create unimaginable products.
Typing Speed Test - A simple typing test to see how fast you can type
AnySoftKeyboard - Android (f/w 1.5+) on-screen keyboard for multiple languages.
keyboardlayouteditor - Powerful, visual designer for designing and editing keyboard layouts.
Hacker's Keyboard - Are you missing the key layout you're used to from your computer when using an Android device?