OpenCATS is an open-source Applicant Tracking System (ATS) designed for recruiters and human resource professionals. It facilitates the management of recruitment and hiring processes by streamlining candidate tracking, resume management, and communication workflows. The software offers features like job posting, resume parsing, candidate searching, and activity tracking, making it suitable for small to medium-sized businesses. OpenCATS is customizable and can be integrated with various third-party tools, providing flexibility to adapt to different recruitment needs. The platform is community-driven, offering support through an active forum of users and developers.