Yes, both OffAlerts and Hyperping offer a Free Trial.
OffAlerts is designed for Large Enterprises, Medium Business and Small Business.
Hyperping is designed for Medium Business and Small Business.
Pricing for OffAlerts Starts at $10/Month when Billed Yearly whereas for Hyperping Starts at $24.16/Month when Billed Yearly.
Some top alternatives to OffAlerts includes Uptime, Uptime Robot, Easyping, Better Uptime, DevMonitor.io, UpTime.onl, Odown, SiteUptime and Uptrends.
Some top alternatives to Hyperping includes StatusCake, StatusEntry, DevMonitor.io, UpTime.onl, OffAlerts, 66uptime, Pingt.io, 4Uptime and WebGazer.