Many home security systems offer video doorbells as add-on components, but these devices typically do not work on their own and must be connected to a system hub. However, they usually interact with other system components such as door locks, sirens, and lighting. If you want a standalone smart doorbell that will work with other smart devices in your home, look for one that supports the IFTTT (If This Then That) internet service. With IFTTT you can easily create mini programs, called applets, that let IFTTT-enabled devices interact with each other. For example, you can create an applet that tells a Wemo Smart Switch to turn on when a Ring Doorbell is pressed, or have a D-Link siren sound when an August Doorbell Cam senses motion.
Facebook Messenger is one of the most popular messaging apps on the planet. We know that a lot of people don't like the app. We agree that it still needs a lot of work. However, there are so many people that use Facebook that Facebook Messenger just makes sense. The video chat experience works relatively well. Since most of the people you know are on Facebook, it's easier to use this app than to convince everyone to join a new platform. Plus, the new ads rolling out aren't great. It's not perfect, but it's perhaps the most convenient of the video chat apps on this list. At least it's free.
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Imo is a simple video calling and chatting app. It boasts compatibility for 2G, 3G, 4G, and LTE networks. That makes it good for those stuck on worse connections. It's also compatible with both iOS and Android. Otherwise, there isn't much to this one. That's not necessarily a bad thing. Aside from text chatting and video calling, this app doesn't have any bloat holding you back from a simple experience. It's free to download and use. The only thing you'll need to deal with is some advertising.