Yes, both JRebel and IntelliJ IDEA offer a Free Trial.
JRebel is designed for Large Enterprises, Medium Business and Small Business.
IntelliJ IDEA is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of IntelliJ IDEA begins at $41/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 IntelliJ IDEA includes Codeanywhere, PaizaCloud, Eclipse Che, Visual Studio IDE, Koding, CodeTogether, Flutter, Codefile and Pseudocode Editor.