When comparing Hyper vs Extraterm, the Slant community recommends Hyper for most people. In the question“What are the best terminal emulators for Mac?” Hyper is ranked 6th while Extraterm is ranked 16th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Beautiful
Pro Great community support, extensions etc
Pro Fully customizable
If you are familiar with web standards, you will be at home in this terminal.
Pro Limited set of features out of the box
Very few features are built into the product itself as the intention is for the plugins to provide most of them. If a plugin doesn't exist just as you like, write it. That extensibility, folks.
Pro speed
not the fastest ever, but for me its a good comprimise of features vs performance
Pro Cross platform
Pro Supports tab, splits and panes
You can set up your own layout with multiple splits and tabs.
Pro Shell integration
The shell integration makes it possible to group in command output in "frames" which show success/failure.
Pro Image support
You can view images and other data types like audio directly in the terminal.
Pro Keyboard based text selection
It is possible to go into a cursor mode where you can select text just like in a text editor. It even supports multiple cursors.
Pro Global shortcuts
You can configure global shortcuts to open the terminal.
Pro Keyboard friendly "Command Palette"
Just like Sublime, Atom and VSCode you can easily search and find commands from the drop down Command Palette.
Cons
Con Limited set of features out of the box
Very few features are built into the product itself as the intention is for the plugins to provide most of them. Yet, taking the other listed con of immature plugin ecosystem into account, this leads to either living without the feature or using an unstable plugin.
Con Can be slow
Example benchmark against iTerm in this Youtube video.
Con Immature plugin ecosystem
Very often you'll find features behaving unexpectedly after installing plugins. Even the popular ones.
Con CJK languages not working
Con Needs an account to work and sends your commands to some server
Apart from the security implications this is slowing things down, making it sometimes unusable!