Yes, both Presence and GoTo Resolve offer a Free Trial.
Presence is designed for Medium Business and Small Business.
GoTo Resolve is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Presence Starts at $6/User/Month whereas for GoTo Resolve Starts at $39/Month when Billed Yearly.
Some top alternatives to Presence includes Yac, Sodasync, WTEAM, Branch, Werk, LiveVoice, VoicePing, Echoes, NinjaOne (NinjaRMM), Remo Virtual Office and GoTo Resolve.
Some top alternatives to GoTo Resolve includes Zoho Assist, ScreenMeet, GoToMyPC, TeamViewer, AnyDesk, Instant Housecall, LogMeIn Pro, RescueAssist, FixMe.IT and LogMeIn Rescue.