When comparing Minuum Keyboard vs Hacker's Keyboard, the Slant community recommends Minuum Keyboard for most people. In the question“What are the best Android soft keyboards?” Minuum Keyboard is ranked 3rd while Hacker's Keyboard is ranked 6th. The most important reason people chose Minuum Keyboard is:
All three rows are smashed into a single row, with prediction driving the typed words. Uses gestures to complete space, backspace, and return for even more space saving. This design is great for devices with smaller screens.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Uses less than half the vertical space
All three rows are smashed into a single row, with prediction driving the typed words. Uses gestures to complete space, backspace, and return for even more space saving. This design is great for devices with smaller screens.
Pro Full keyboard when needed
Swiping two fingers up will open the full keyboard when more precision is need or when Minuum does not know the word you need.
Pro Hover mode
Has a mode where you can move the keyboard around across the screen.
Pro Easy access to emoji
Bonus panel lets you get easy access to your most frequently used emoji.

Pro Easy to use UI
Easy access to cursor movement keys, cut/copy/paste, share and more.

Pro Customizable keyboard colors
Minuum Keyboard has a chameleon feature where the user can change the color of the keyboard. This allows for users to match their devices color, case or wallpaper.

Pro Multiple Languages
Works in 13 languages.
Pro Smartwatch support
With the small size of the Minuum keyboard it makes and ideal use case for smartwatches, due to their limited screen real estate.
Pro Open source
Hacker's Keyboard is an open source project meaning that anyone can use the available code for free.
Pro Supports a lot of keyboard layouts and dictionaries
Hacker's Keyboard support 31 different languages and many different layouts such as AZERTY and QWERTZ.
Pro Mimics the look of a desktop keyboard
Including punctuation, arrow keys, special chars (tab, esc), etc.
Also gives access to Ctrl, Shift, etc. Particularly suited to terminal applications.
Cons
Con No longer updated
Hasn't recieved significant updates since 2016.
Con Can't type URLs
Sloppy typing only works on words in its dictionary. You can't enter words without a space between them, because it wants to "correct" the first word you have already accepted. This makes it impossible to type many URLs, unless you do it letter-by-letter, or go back and erase the spaces, which is tedious.
Con Only major languages
Only supports the most used languages at the moment.
Con Difficult learning curve
Takes a while to get used to, if used while minimized.
Con Poor auto correction
The auto correction on Hacker's Keyboard does not work that great, especially when compared to other offerings on Android.
