ZoneMinder: A powerhouse for Linux users, providing a full-scale surveillance suite without licensing fees. Affordable Premium Software
It boasts compatibility with a broad range of IP camera models, allowing users to integrate cameras from different manufacturers.
If you need advanced features not found in the free version, consider other highly-rated free alternatives like iSpyConnect ZoneMinder (open-source), or tinyCam Monitor Technical Support & Troubleshooting
, meaning it generally does not require a serial number for its core video surveillance functions. Understanding Serial Numbers for this Software