OpenSurv is described as 'Free application that transforms your compatible device into a dedicated device to monitor video streams or images' and is an app. There are more than 10 alternatives to OpenSurv for a variety of platforms, including Windows, Android, iPhone, Linux and iPad apps. The best OpenSurv alternative is Shinobi. It's not free, so if you're looking for a free alternative, you could try Shinobi or webcamXP . Other great apps like OpenSurv are Eyeline Video Surveillance, Mobiscope, VOVSOFT Webcam Capture and Web Camera Pro.
Simple to use, it's focus on doing one thing well is what makes it effective.