title: Alternative to Google Custom Search
body: <p>I'm using <a href="http://www.google.com/cse" rel="noreferrer">Google Custom Search</a> on a client website. They are not very happy about rival companies showing up on sponsored links on their own site. I know we can use <a href="http://www.google.com/sitesearch/" rel="noreferrer">Google Site Search</a> but it has an annual fee. I've been looking all around for a Free/OpenSource alternative for Google CSE, but found little I can use. Anyone have any suggestions?</p>