The best alternatives to Hub Keyboard from Microsoft are Slash Keyboard, SwiftKey for iOS, and Hebbia. If these 3 options don't work for you, we've listed a few more alternatives below.
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Hebbia is a Chrome extension that *understands* your questions and highlights all relevant info in a webpage. ⠀ Find exactly what you need with just 1 question, powered by cutting-edge AI. ⠀ 👉 Try it on the Chrome webstore! http://producthunt.hebbia.ai
Lightkey is a free text prediction software for Windows that can save up to 40% of your typing time in 85 languages. Lightkey gradually adapts itself to your typing style and offers tailored predictions. Lightkey supports MS Office (Word, Outlook and PPT) and Google Chrome (Gmail, WhatsApp Web, Yahoo! Mail and Outlook Mail).