When comparing software.jessies.org terminator vs QTerminal, the Slant community recommends QTerminal for most people. In the question“What are the best Linux terminal emulators?” QTerminal is ranked 26th while software.jessies.org terminator is ranked 36th. The most important reason people chose QTerminal is:
QTerminal support font ligatures found in fonts like FiraCode.
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Pros

Pro UTF-8 support enables character encoding
Due to UTF-8, this terminator won't mangle your favorite accented characters, and it copes well with languages where there's a mix of normal and wide glyphs (such as Greek).

Pro Unlimited scrollback
Terminator won't throw away output when it scrolls off the top of the screen, nor when it reaches any arbitrary limit.

Pro Multiple tabs
This is just like tabbed browsing, only with terminals, and means that multiple pages or documents are contained in a single window.

Pro Horizontal scrolling
Most terminal emulators wrap text when it intrudes upon the right margin. Terminator doesn't; it instead provides a horizontal scrollbar when necessary.
Pro Font ligatures
QTerminal support font ligatures found in fonts like FiraCode.
Pro Lightweight
Compared to many terminal emulators, QTerminal is lightweight with fewer dependencies than most.
Cons
Con Seems to have been abandoned
There are several issues posted since 2013 on the project repository that have not yet been solved.
Con Window resize
Resizing the window does not resize the contents, like rxvt-unicode does.
Con Strange default paste action
When pasting into QTerminal, one has to be careful as it assumes immediate execution.
