Florisboard. Android keyboard, doesn’t have spell checking yet but I’ve been using it for years, you might not need autocorrect as much as you think! (Note for Samsung users: Samsung Keyboard keeps adding items to its clipboard history whether it’s default or not. Clipboard history is also accessible through Edge Panels. Your passwords might end up and sit there for a long time… you can use adb to disable com.samsung.android.app.clipboardedge and com.samsung.clipboardsaveservice.)

Delta Chat, for messaging. Sign-up is extremely easy using the default server, and I’ve convinced some of my contacts to join.