AnySoftKeyboard - Android (f/w 1.5+) on-screen keyboard for multiple languages.
Keyboard for Phone X - Keyboard for Phone X is a free to use application that allows you to enjoy Phone X like chatting experience and bring your phone a new look.
Gboard - Google-powered keyboard with search, GIFs, emojis and more!
Silver Keyboard - Silver Keyboard is a free, easy to use, and beautiful keyboard app developed and published by Cool Theme App for Android and iOS devices.
FlorisBoard - An open-source keyboard for Android.
Fast Typing Keyboard - Fast Typing Keyboard is a new kind of keyboard application that completely change the way you type your text messages.