Neither Nimbus nor HackerPen offers a free trial.
Nimbus is designed for Large Enterprises, Medium Business and Small Business.
HackerPen is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Nimbus Starts at $3/User/Month whereas for HackerPen Starts at $41.66/Month when Billed Yearly.
Some top alternatives to Nimbus includes Codeanywhere, PaizaCloud, AWS Cloud9, Koding, CodeinCloud, CodeTogether, Codigo, CodeSync, CodeOnline and HackerPen.
Some top alternatives to HackerPen includes PaizaCloud, AWS Cloud9, CodeinCloud, CodeOnline, Qualified, Workvivo, WebTool, CodeSee, CoderPad, Interview Sandbox, IFTTT and Codidate.