IMHO, The best option for Apple households is a Dahua NVR and Cameras, they have a native OSX App that works well for viewing the camera and accessing the NVR..
There is an option you can use for OS X - it will work but takes some additional work. You can install Parallels Desktop for OS X. Then, as a guess system install Windows XP or 7. After that, Blue Iris will run just fine and if you select full screen for the windows guest you will have a hard time noticing the difference from a native windows system. I currently use this solution for my Mac.
The down side is you may need to learn a bit more about your Mac and it will cost $ 69 USD for Parallels (ordered from Amazon). There is also the cost of a Windows license for someplace. You can import a system image from an old Windows system if you have one or pick up an OEM version form one of the sellers on e-bay.
If you run Parallels you can also install free copies of Linux to play with or use for various tasks. My Mac currently runs OS X 10.10, windows XP and a copy of ubuntu Linux - all at the same time.
On the other hand. If you don't like to tinker with systems or feel a bit challenged in that area, then, the other posters suggestions are a good route to follow. Good luck with your project.