When comparing Realterm vs Termite, the Slant community recommends Termite for most people. In the question“What is the best serial terminal?” Termite is ranked 1st while Realterm is ranked 2nd. The most important reason people chose Termite is:
Termite is a minimalistic terminal emulator. It does not need too many resources to run and it's designed primarily to work with window managers.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Optionally can sniff/spy ports
Additional drivers needed (need to pay for it).
Pro I2C ready
It is configured to work with I2C protocol
Pro Plenty of options
Both for visualization and for sending serial messages
Pro Minimal terminal emulator
Termite is a minimalistic terminal emulator. It does not need too many resources to run and it's designed primarily to work with window managers.
Pro Vim-like behavior
Termite supports a command mode which is very useful if you prefer to use Vim-like keybindings. It takes inspiration from Vim, one of the most popular text editors, so someone who is used to Vim's commands will find themselves at home.
Pro Works great with a tiling window manager
Termite is most suited to a tiling window manager with a simple config file.
Pro 24-bit "True Color" support
Termite supports true color palettes, meaning that it allows for up to 16,777,216 possible colors.
Pro Simple configuration
Termite is easy to configure. Reconfiguration does not require logging out or rebooting.
Pro Simple font resizing
You can just press Ctrl-PLUS, Ctrl-MINUS or Ctrl-EQUALS to change font size.
Pro Display images
Ranger image preview works in termite.
Cons
Con Only for Windows
However you can try with Wine as suggested by the author.
Con Obsoleted by Alacritty
Con Difficult to install in some distros
Con Cannot set specific parameters through CLI arguments
Setting specific parameters through CLI arguments is not supported in Termite.
Con Problem correctly displaying images while using compton
Images can sometimes not be displayed correctly in software such as ranger while using compton.
Con Can't change keybinding
Con Limited documentation
There's only short manpages and a README on the front page of the repository which has few details on additional configuration and features.
Con Bad URL matching
Per default, there are some inconvenient issues with url matching.