Yes, both IntelliJ IDEA and CodeTogether offer a Free Trial.
IntelliJ IDEA is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
CodeTogether is designed for Large Enterprises, Medium Business and Small Business.
Pricing for IntelliJ IDEA Starts at $41/User/Month when Billed Yearly whereas for CodeTogether Starts at $1,750/Year.
Some top alternatives to IntelliJ IDEA includes Codeanywhere, PaizaCloud, Eclipse Che, Visual Studio IDE, Koding, CodeTogether, Flutter, Codefile and Pseudocode Editor.
Some top alternatives to CodeTogether includes IntelliJ IDEA, Codeanywhere, ShiftEdit, Koding, CodeinCloud, GitLive, CodeSync, Codefile, CodeOnline and HackerPen.
