Tools similar to burp's intruder tool

[aerokid240]

Hey, im looking for free alternative to burpsuite's intruder tool for automated injection in web app testing. As you may already know, the free version of burp is time-throttled and limited. Wanted to know what other tools in the same category can accomplish the same task.

Thanks

[Cains]

Yo might want to check out w3af, It have some of the same capability's,