As you mentioned, the main difference (to me, at least) is agnosticism and hackability. Merb forces almost nothing on you in terms of the framework stack. Als

As you mentioned, the main difference (to me, at least) is agnosticism and hackability. Merb forces almost nothing on you in terms of the framework stack. Also, the core of merb is much more approachable for people wanting to modify it for their own needs.