Yes, both SourceLevel and Coder offer a Free Trial.
SourceLevel is designed for Freelancers, Medium Business and Small Business.
Coder is designed for Individuals, Medium Business and Small Business.
Pricing for SourceLevel Starts at $5/User/Month whereas for Coder Starts at $35/User/Month.
Some top alternatives to SourceLevel includes DevScore, AWS Cloud9, Visual Studio IDE, CodePen, CodeTogether, YepCode, DeepSource, Codacy, Code Climate Quality and Code Inspector.
Some top alternatives to Coder includes IntelliJ IDEA, Codeanywhere, ShiftEdit, Eclipse Che, Visual Studio IDE, Koding, CodeinCloud, CodeTogether, Red Hat CodeReady Workspaces and CodeOnline.