Plug-ins
- Job Listing
- Job Manager
- WP Careers
- WP Job Board – Premium (This has a similar name to the one you linked to, but they seem to be completely different systems)
Themes
As you can see, a lot of available solutions are premium plug-ins or themes. The pricing seems fairly reasonable ($25-$40 for a good solution), but if you’re really strapped with your project budget the free plug-ins might serve as a good base for building your own replacement.
Once again, though, I have no criteria with which to judge any of these alternatives since you never explained exactly what you were looking for. All of these options will help you build a job site, but without a better understanding of what you’re trying to accomplish, I have no idea which, if any, would be the best route for you.