Esther is described as 'Install Esther and make your old phone a security device. It will inform you the status of your home: the power network, the internet status and you will be able to take pictures and videos' and is an app in the security & privacy category. There are more than 10 alternatives to Esther for a variety of platforms, including Android, iPhone, iPad, Android Tablet and Windows. The best alternative is ZoneMinder, which is both free and Open Source. Other great apps like Esther are Alfred Camera, iSpy, Yawcam and Motion.
ZoneMinder is a free video camera security application suite, designed for low cost DIY video security including commercial or home CCTV, theft prevention and child or family member monitoring including nanny cam applications.
Alfred is an app that turns your smartphones to home security cameras and allows you to be in the know wherever you are. The motion detection and push notification features alert you when something is going on.
iSpy uses your USB webcams, IP cams, capture cards, desktops and microphones to detect and record movement or sound and provides security, surveillance, monitoring and alerting services. Media is recorded directly to H264 mp4 files or AVI files.
Yawcam stands for Yet Another Webcam software & that's exactly what it is. More precisely Yawcam is a webcam software for windows written in Java. The main ideas for Yawcam are to keep it simple and easy to use, but to include all the usual features.
"Presence transforms your spare Android and iOS smartphones into free Wi-Fi security cameras with motion detection! It expands with add-on connected products to control your home from anywhere in the world.