Open alternatives6
Open-source apps that replace Gboard and SwiftKey

HeliBoard is a keyboard app for Android phones that works fully offline and focuses on privacy and customization. It is for people who want a configurable typing app that does not connect to the internet.

AnySoftKeyboard is a free on-screen keyboard app for Android phones that supports many languages and layouts. It is for people who want a customizable keyboard with word suggestions, gesture typing and dark mode.
OpenBoard is a free, open-source keyboard app for typing on Android phones. It is for people who want a keyboard that does not depend on Google software and respects their privacy.
Indic Keyboard is a phone keyboard for Android that lets you type in Indian languages such as Hindi, Tamil and Bengali, alongside English. It is for people who want to write messages and emails in their own language on their phone.

FlorisBoard is a free, open-source keyboard app for Android phones, currently in beta, with themes, a clipboard history and an emoji keyboard. It does not yet offer word suggestions or spell checking, so it suits people who value customization and privacy over predictive typing.

Simple Keyboard is an Android phone keyboard app for typing on your phone. It is for people who want a basic, lightweight keyboard without extra features.
What's missing
What people still miss here, and wish existed. Upvote what matters to you.
Before you build
Planning something for phone keyboards? See what exists first, so you can reuse parts or explain what's different. Paste this into any AI assistant:
Fix the list itself
A project or closed app missing from this list, or a mistake on it? These open a short form on GitHub, and a mod reviews it. To say what a project can't do, use What's missing.
About this page
Replaces fully means it does the main job of these apps; Replaces partly means it covers some of it.
Licenses: every project here uses an open-source license (what each one means). Open core means some parts are paid or under another license.
GitHub stars are shown for reference. They measure popularity, not whether it replaces anything.
Verified means r/TrueOpenSource mods checked it: open-source license, maintained, and it really does the job.
How Open Source Everything works