fshell is the Symbian equivalent of bash + telnet + a posix-like set of command-line tools. In other words it's a console framework for Symbian OS with support for remote connections and a suite of tools for debugging the device.
Zsh Alternatives for Symbian S60
Zsh is not available for Symbian S60 but there is one alternative with similar functionality. The best Symbian S60 alternative is fshell, which is both free and Open Source. If that doesn't work for you, our users have ranked more than 25 alternatives to Zsh, but unfortunately only one of them is available for Symbian S60. If you can't find an alternative you can try to remove all filters.