Since many of the ATS vendors are privately held there is not a lot of public information on market share.
Several of the more popular and faster growing Applicant Tracking Systems include -
- ApplicantStack, www.applicantstack.com
- MyStaffingPro, www.mystaffingpro.com
- PCRecruiter, www.pcrecruiter.com
- Bullhorn, www.bullhorn.com
Anyone considering one of these options may want to participate in a product demo and sign-up for a free trial. That's an excellent, low risk way to get your feet wet with an Applicant Tracking System.