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Review of iSpy powered by the Slant community.
iSpy is the world’s most popular open source video surveillance application. It's compatible with the the vast majority of consumer webcams and IP cameras.
iSpy is free to use locally. You can add as many cameras as you like. Secured web access, SMS, Twitter, email alerts and mobile device access require a subscription or a one-off payment
SpecsUpdate
PlatformsWindows, Linux, Mac
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Pros
Pro Open source
Pro Lot's of brands supported
There is also good documentation on how to access ip camera's of different brands.
Cons
Con Free version not fully functional
Some basic functions like remote access streaming and email alerts are only available for paid subscribers.