[eluser]Jondolar[/eluser]
Looks like a completely different type of product.
From their website:
PHPDevShell would typically be used to develop back-end systems for company processes. It is not a CMS (Content Management System) or an MVC Framework and nor does it pretend to be one of those solutions. PHPDevShell is essentially a ready made GUI application where you can immediately start with the development work that matters most, your application. For security and usability it already provides you with user registration and management, role management, group management, access rights security, important system settings, templates, control panels, cronjob management, menu management, plugin management etc.
Ready made GUI application vs. a framework. You probably need to decide which approach is best for you.