Neither Slido nor vFairs offers a free trial.
Slido is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
vFairs is designed for Individuals, Large Enterprises, Medium Business and Small Business.
The starting price of Slido begins at $15/Month, while pricing details for vFairs are unavailable.
Some top alternatives to Slido includes Zeetings, Engagenow, EngageVisitor, Mentimeter, Conferences i/o, Pigeonhole Live, Vevox, VoxVote, Poll Everywhere and CommentScreen.
Some top alternatives to vFairs includes HexaFair, V-Tour, Vconfex, VES Virtual, Virtualive, Event Anywhere, Vmeets, Ferias Virtuales Web, Cisco Webex Webinars (formerly Webex Events) and Fourwaves.