Yes, both Coder and IntelliJ IDEA offer a Free Trial.
Coder is designed for Individuals, Medium Business and Small Business.
IntelliJ IDEA is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Coder Starts at $35/User/Month whereas for IntelliJ IDEA Starts at $41/User/Month when Billed Yearly.
Some top alternatives to Coder includes IntelliJ IDEA, Codeanywhere, ShiftEdit, Eclipse Che, Visual Studio IDE, Koding, CodeinCloud, CodeTogether, Red Hat CodeReady Workspaces and CodeOnline.
Some top alternatives to IntelliJ IDEA includes Codeanywhere, PaizaCloud, Eclipse Che, Visual Studio IDE, Koding, CodeTogether, Flutter, Codefile and Pseudocode Editor.