I like Kombo for its ability to connect to all major ATS and HRIS without needing to develop and maintain a dedicated API. The webhook for Teamtailor is particularly helpful, and I find the flow they built to connect to ATS and HRIS incredibly easy to use, unlike anything I've seen before. It's great that they specifically focus on ATS and HRIS instead of other tools. The initial setup was very, very easy, and I also appreciate the incredibly reactive support team.
Kombo is the leading global unified API for HR, ATS, and Payroll integrations. Instead of having to build and maintain many APIs themselves, Kombo's customers can integrate with Kombo's API once and offer 100+ APIs to their customers out-of-the-box.