Yes, both WatchSumo and Uptime offer a Free Trial.
WatchSumo is designed for Medium Business and Small Business.
Uptime is designed for Large Enterprises, Medium Business and Small Business.
Pricing for WatchSumo Starts at $7/Month whereas for Uptime Starts at $15/Month when Billed Yearly.
Some top alternatives to WatchSumo includes Uptime, Super Monitoring, UpTime.onl, Netumo, Uptrends, pingnow.io, WebForce Uptime, Pingt.io and Statsignal.
Some top alternatives to Uptime includes Uptime Robot, Super Monitoring, Dotcom Monitor, DevMonitor.io, UpTime.onl, Odown, Downtime Monkey, SiteUptime, updown.io and SolarWinds Pingdom.