Would you be interested in this web app help product?
csomar: Don't forget that you are building this for programmers, so they already know the open source alternative and may also prefer to code it from scratch.Try to build something that bring value to the user. Check out codecanyon.com, they have lot of scripts. Some are successful and brings $1,000++ and some get a sale or two. But those are small scripts, and even when they are small, they are 600 or 700 line of PHP or JavaScript code.