Yes, both JRebel and Codeanywhere offer a Free Trial.
JRebel is designed for Large Enterprises, Medium Business and Small Business.
Codeanywhere is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of Codeanywhere begins at $4.80/User/Month when Billed Yearly, while pricing details for JRebel are unavailable.
Some top alternatives to JRebel includes DevScore, LiveCode, Google Cloud Debugger, IntelliJ IDEA, Codeanywhere, Repl.it, CodeTogether, Replit and CodeSee.
Some top alternatives to Codeanywhere includes IntelliJ IDEA, ShiftEdit, PaizaCloud, AWS Cloud9, Koding, CodeinCloud, CodeTogether, Replit, Codigo and Codefile.