How to drag calls from one agent to another?

We’ve been using iSymphony for many years but they no longer provide support, so I’m looking for an alternative. I installed FOP2 but that doesn’t have drag & drop capability.

Are there any tools out there that will enable this functionality??

Thanks

The closest product I’ve seen for Asterisk when compared with iSymphony is Voice Operator Panel. It can be a full switchboard or utilized in a call center. It features intercept and transfer capability.