Best recruitment software, preferably open source or free?

I'm looking for software to manage a database for job applications and recruitment. I was going to use a modified version of web help desk because I like it's features, but using webforms for applications did not play well with it. I like how WHD installs locally and is access via web. I would like features like sort/filter, web access, applicant profile page, attachments (for resumes and cover sheets) and the ability to design a web form for the applicant to fill out which can be submitted directly to the system to create a new application. Any help? It doesn't have to be free, but I would prefer it to be and I definitely don't want the cost to be recurring.