I GIVE NO SUPPORT FOR INSTALLATION ISSUES CAUSE IF YOU READ THE README FILE (AS IT SHOULD OBVIOUSLY BE), YOU WON'T ENCOUNTER ANY PROBLEM DURING INSTALLATION PROCESS.
Sunshell is a shell inspired by Ahman work on PSP with irShell ( http://www.qj.net/qjnet/psp/psp-homebrew-ir-shell-v52.html ).
It's coded in C and LUA and it provides a modules system.
Any developer can easily add their homebrews (both C and LUA homebrews) to Sunshell...
[Release] Sunshell - A powerfull shell for 3DS