When comparing Extraterm vs WezTerm, the Slant community recommends WezTerm for most people. In the question“What are the best terminal emulators for UNIX-like systems?” WezTerm is ranked 25th while Extraterm is ranked 40th. The most important reason people chose WezTerm is:
tmux-like functionality with native UI even on Windows systems allows managing multiple terminal sessions how you like.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
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.
Pro Supports multiple windows, tabs, splits/panes
tmux-like functionality with native UI even on Windows systems allows managing multiple terminal sessions how you like.
Pro Looks good
Highly customizable appearance and comes with over 240 built-in color schemes.
Pro Open Source and Free
Pro Supports font ligatures and stylistic sets
Ships with JetBrains Mono, a modern programmers font, so that you can enjoy modern typographical features such as contextual ligatures and font variations/stylistic sets in your terminal environment.
Pro GPU Accelerated
Cons
Con Lua learning curve for config
The only reason it would be difficult to recommend is that it's for experienced programmers.
