Yes, both WebGazer and Uptrends offer a Free Trial.
WebGazer is designed for Medium Business and Small Business.
Uptrends is designed for Large Enterprises, Medium Business and Small Business.
Pricing for WebGazer Starts at $5/Month whereas for Uptrends Starts at $15.47/Month when Billed Yearly.
Some top alternatives to WebGazer includes Uptime, Uptime Robot, Better Uptime, Webeye, UpTime.onl, SiteUptime, Uptrends, Qualified, WatchSumo, Workvivo and IFTTT.
Some top alternatives to Uptrends includes Freshping, Uptime, DevMonitor.io, Monitis, SolarWinds Pingdom, Visualping, pingnow.io, Epic Ping, PingPing and Pingt.io.