When comparing Terminus vs Extraterm, the Slant community recommends Terminus for most people. In the question“What are the best terminal emulators for Windows?” Terminus is ranked 4th while Extraterm is ranked 24th.
Ranked in these QuestionsQuestion Ranking
Pro It looks just beautiful
Pro It's open source
This helps the community to move software forward and to make it even better.
Pro It comes with plugins
Pro Is cross-platform
Even the question was "...for Windows", it's nice if you can use your tools over different platforms.
Pro Under active development
Hyper development has basically stalled out.
A lot of things can be easily configured, e.g. color theme, size, window frame behavior, tab location, cursor style, hotkeys, etc.
Pro Integrated GitBash, Cmd, PowerShell, and WSL
Pro Integrates with git-bash with a simple toggle in the interface
Pro Excellent interface
At start opens last session terminals. Also has terminal tabs.
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.
Pro Cross platform
Con Some functions still fail
Con Slow with input lag
Sadly, Electron strikes again. The input lag is noticeable and annoying. Startup also takes like 2 seconds or more (On an i7 from 2016 with SSD).
It's huge. The amount of resources it consumes is not justifiable.
Con Cannot remove the default profiles
For example, you installed Arch Linux for Windows Subsystem for Linux some time ago, but now you have deleted it and currently use Ubuntu on WSL. After that, if you decide to try this terminal emulator, you'll find Arch there without an option to remove the profiles already included in Terminus.
Con Easy to be confused with different brands of the same or similar name
Like Terminus (Russian production company), Terminus (font) or Termius (SSH client).
Con No multi window support
Can't split tabs into multiple windows.