Given user-defined study goals, ddgRADer recommends enzyme pairs and allows users to compare and choose enzymes and size-selection criteria.
ddgrader.haifa.ac.il
I'm very happy with this one. Haven't contributed tools to the community since my PhD. This is the first webserver developed by my lab. I'm sure it could be helpful for many people out there! Aparna Lajmi led this very meticulous study, Felix Ix developed the awesome ddgRADer!