Yes, both GuardRails and Codeac offer a Free Trial.
GuardRails is designed for Large Enterprises, Medium Business and Small Business.
Codeac is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for GuardRails Starts at $39/Month when Billed Yearly whereas for Codeac Starts at $21/User/Month when Billed Yearly.
Some top alternatives to GuardRails includes DeepSource, ReSharper, codebeat, Codacy, Cycode, SoftaCheck, Codeac, CodeThreat, VCodeSpy and Code Inspector.
Some top alternatives to Codeac includes Static Object, DeepSource, ReSharper, ReSharper C++, codebeat, Codacy, Code Climate Quality, Codiga, SoftaCheck and Code Inspector.