When comparing altyo vs hyper, the Slant community recommends hyper for most people. In the question“What are the best terminal emulators for UNIX-like systems?” hyper is ranked 24th while altyo is ranked 37th. The most important reason people chose hyper is:
Although not Windows-friendly. But nobody uses Windows terminal anyway.
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Pros
Pro Few dependencies
Altyo has very few dependencies (it only depends on libvte and gtk3) making it a very lightweight terminal that doesn't require many resources to run.
Pro Cross-platform due to electron browser-based foundation
Although not Windows-friendly. But nobody uses Windows terminal anyway.
Pro Built on electron, supports split panels and plugins
Cons
Con Not very powerful
Even for a terminal that aims to be as lightweight as possible, altyo is still not as powerful as it should be. It doesn't have many features found in other options and it's not very customizable.
Con Made with Electron
It uses a considerable amount of resources, compared to other offerings.
Con Not as cross platform as advertised
Most features only work on Mac OS.
Con Incorrect rendering
Terminal window has visual artifacts.
Con No configuration UI; all options must be set via JSON
Con Still maturing as of December 2016
Folks noticed some issues in the 1.0 release cited here.