Network Video Recorders, or NVRs, are used in conjunction with IP cameras. Among the free, open-source systems of such kinds, ZoneMinder (its entry on Wikipedia), which runs on various flavors of Linux, but not on Windows, has been well known. I also knew about iSpy, which runs on Windows only.
- “Top best free/paid video management software for IP cameras” lists more.
- Motion (surveillance software) is basically a motion-detection utility that is available on OpenWrt. MotionEye is a Web frontend to Motion, which is written in Python and runs on Linux.
- “What Is the State of Linux Security DVR Software? – Slashdot” — a pre-2010 discussion, very probably outdated for the most part.
This article is a byproduct of my research into IP cameras from WyzeLabs.