Yes, both DevScreen and CoderPad offer a Free Trial.
DevScreen is designed for Freelancers, Medium Business and Small Business.
CoderPad is designed for Large Enterprises, Medium Business and Small Business.
Pricing for DevScreen Starts at $89/Month whereas for CoderPad Starts at $1,500/Month.
Some top alternatives to DevScreen includes Amazon Forecast, AnalyticsVerse, Datapeople, TalScale, CoderPad, HackerEarth, HackerRank, KillerCoder.io and HiringMirror.
Some top alternatives to CoderPad includes LeetCode Interview, CodingView.io, Codility, Codejudge, HackerEarth, SkillRobo, HackerRank, KillerCoder.io, Codidate and CodeSignal.