Plug-in for VMAX is available at http://https://github.com/dtonnesen/vmaxvro
The other EMC-related plug-in I'm aware of are plug-ins for EMC ViPR and EMC Avamar. Not sure for the other products you listed.
Does the products I listed support REST API ?
No idea, you may want to check documentation for these products (if it is available online on EMC site).