SecuritySpy is a Macintosh-hosted camera surveillance program. This plugin lets you set up SecuritySpy cameras as Indigo devices, and use actions to manipulate their active mode, set their overlay strings, command PTZ motion (if capable) and a few other tricks. If you are willing to install a relay script into SecuritySpy, you can also use SecuritySpy's visual motion detection to trigger events in Indigo.
This plugin requires SecuritySpy 2.1 or later. It ought to work with the demo version if you just want to play around with it.
This integration should to be much richer. It is currently held back on both sides: SecuritySpy's web interface (as of version 2.1) is limited; and Indigo is missing integration of plugins with its web engine, so that plugins cannot manage dynamic images there. Perhaps over time this will improve.
Download from http://www.cynic.org/indigo/plugins. Use the "About..." menu item for a (preliminary) help page. Let me know if you have any questions.
Cheers
-- perry