When comparing ROXTerm vs Alacritty, the Slant community recommends Alacritty for most people. In the question“What are the best terminal emulators for UNIX-like systems?” Alacritty is ranked 7th while ROXTerm is ranked 21st. The most important reason people chose Alacritty is:
Written in Rust with a philosophy focusing on speed and simplicity, Alacritty is one of the fastest terminal emulators out there.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Drag and drop
ROXTerm supports dragging and dropping items into the Terminal window.
Pro Advanced D-Bus usage
In ROXTerm, users can use D-Bus to configure terminals from other applications, allowing for communication between multiple computer programs.
Pro Includes a configuration manager
ROXTerm includes a configuration manager which can easily be run by selecting Configure...
in the terminal's menu, or by simply running roxterm-config
. You can then easily swap configuration files with other users, manage profiles, and customize things like color schemes or keyboard shortcuts.
Pro Supports GTK3
ROXTerm uses the latest GTK widget set which is great a multi-platform toolkit for creating graphical user interfaces.
Pro Blazing fast rendering with GPU-accelerated
Written in Rust with a philosophy focusing on speed and simplicity, Alacritty is one of the fastest terminal emulators out there.
Pro Looks good
Alacritty looks very slick on Linux, especially with GNOME or i3.
Pro Simple configuration
The configuration file is very well made and easy to use. You can fine tune your preferences to perfection in a matter of minutes.
Pro Comprehensive font options
Alacritty can be configured to adjust line spacing (height), letter spacing (width), and individual character horizontal/vertical positions.
Pro Has support for image previews in w3m and ranger
Pro Has text ref-low when window is resized
Pro Fast and simple but with true color support
It's simple and fast like xterm or urxvt but with truecolor support which is a big plus if you use a terminal based code editor. Basically Alacritty has all the features you need and nothing you don't (if you're using tmux for multiplexing).
Cons
Con Uncertain future
The original developer, Tony Houghton, declared the death of Roxterm on 2016-05 at https://sourceforge.net/p/roxterm/discussion/422638/thread/60da6975/?limit=25#3fc9.
In 2018, work began to resume on Github rather than Sourceforge (https://github.com/realh/roxterm/issues/1) but the future maintenance is uncertain.
Con Not for regular users
ROXTerm is made for power users who spend most of their time on the terminal. For a regular user using ROXTerm it would be an overkill.
Con Cannot into ligatures
Alacritty does not support ligatures in Fira Code, Iosevka etc.
Con Unreliable Font Rendering
Like a box of chocolate you never know what you're going to get.
Con Sacrifices basic features for raw performance
The Suzuki GSXR of terminals. Or your ditzy, blonde high school cheerleader; fast and pretty but not a lot going on under the hood.
Eschews a negative developmental philosophy towards including said functionality, with the official reason cited in project documentation as "Not within the realm of a terminal emulator" and ostensibly, "best left up to other tools such as terminal multiplexers" [such as screen or tmux]. Which is unfortunate when you factor in speed against terminal with the functionality built in vs their reliance on 3rd party tools:
tmux on alacritty: 'find /usr' time: 3.234s, cpu: 72%
tmux on konsole: find /usr' time: 1.777s, cpu: 96%
See issue here.