Really Simple Support offers Free Trial, but Plain does not.
Plain is designed for Large Enterprises, Medium Business and Small Business.
Really Simple Support is designed for Medium Business and Small Business.
Pricing for Plain Starts at $59/Month whereas for Really Simple Support Starts at $6.66/Month when Billed Yearly.
Some top alternatives to Plain includes TeamSupport, Supportbench, ClientSuccess, Custify, UserIQ, Planhat, Catalyst, Aligned, Freshdesk Customer Success (Formely Freshsuccess) and Really Simple Support.
Some top alternatives to Really Simple Support includes Freshdesk, Support Hub, Snappy, Support.cc by 500apps, SmartSupport, Little SaaS Communication, Qualified, Workvivo, QReviews, Stream Follows, Featurelly and IFTTT.
