When comparing Kobra vs Floobits, the Slant community recommends Floobits for most people. In the question“What are the best online collaborative programming editors?” Floobits is ranked 8th while Kobra is ranked 9th. The most important reason people chose Floobits is:
Floobits doesn't force a new text editor, it integrates with existing text editors such as Emacs, Vim and Sublime Text.
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Pros
Pro Built-in video chat support
Kobra has native support for videoconferencing.
Pro Integrates with your text editors
Floobits doesn't force a new text editor, it integrates with existing text editors such as Emacs, Vim and Sublime Text.
Pro Video conferencing support
Floobits integrates with Google Hangouts to provide voice and video chat.
Pro Share terminal
Pro No editor
You can sync a Floobits workspace without a editor using a command line tool.
Cons
Con One file only
Only one file can be edited collaboratively at a time.
Con Limited number of supported editors
Floobits only supports a subset of IDEs and editors available. If you or the people you intend to work with don't use the supported editors, someone needs to switch their preferred environment to use the service.