ZoneMinder
Open-source Linux video surveillance with motion detection, web UI, and multi-camera support.
ZoneMinder is a complete open-source video surveillance solution for Linux. It supports a wide range of cameras including analog cameras (via Video4Linux), USB cameras, and IP network cameras. The system provides real-time capture, motion detection, recording, and live monitoring through a web interface. It can be configured to trigger events (e.g., email alerts, scripts) on motion. ZoneMinder is highly scalable, supporting multiple cameras simultaneously. It is designed for home security, small business surveillance, and even large-scale deployments.