AnySoftKeyboard - Android (f/w 1.5+) on-screen keyboard for multiple languages.
Typewise - The next generation keyboard
Gboard - Google-powered keyboard with search, GIFs, emojis and more!
Lingvanex Translator for Slack - Auto-translate messages, documents and images in Slack
FlorisBoard - An open-source keyboard for Android.
YOUS - Audio/video calls with AI-based translator