A job board aggregator is a website that collects job postings from various online job boards and then displays them in a central location. This can be a useful tool for job seekers, as it allows them to search for job openings in one place instead of having to visit multiple websites.

Most job board aggregators will let you search for jobs by keyword, location, and/or job title. Some also allow you to set up email alerts, so you can be notified when new jobs that match your criteria are posted.

While job board aggregators can be helpful, it's important to remember that not all job boards are included in every aggregator. So, if you're using one of these websites to search for jobs, be sure to also visit the individual job boards that you're interested in.