With huge numbers of us now working from home and spending more time in the house, there's never been a time when you need to call colleagues or friends.
There are a few stand-out examples that offer instant messaging and video chat as well as numerous other features. Every app is available across multiple platforms, with the exception of Apple's FaceTime that is restricted to Apple devices.
Our guide to the best video calling apps
Best for Facebook devotees
Facebook recently worked to streamline Messenger, which has been separate from the main Facebook app for several years now. Messenger is used by many individuals and businesses for communication and you can even use it without a Facebook account.
You can video or voice chat with an individual or a group very easily.
Best for small group calls - up to four people
Facebook-owned WhatsApp may be second to Messenger in North America, but globally it is massive. As of early 2020 the app said it has over two billion users worldwide which is quite an incredible reach for an app that started as a paid-for premium app.
WhatsApp's strength is that it is easy to make new chats and search for messages in the past. You can also see when messages are received and read and it's just great with pictures.
It can be used for video and voice calls. You can start a call with one individual and then add other participants easily.
Best for Apple-to-Apple calls
We don't know how many users FaceTime video has, but it's massive between Apple users and there's been a Group FaceTime feature since last year.
Of course, being Apple-only is a disadvantage not shared by any of the other apps here but it is available across both iOS and macOS.
Best for work video conferencing (and for the tiled view)
Zoom is a cloud-based video conferencing service you can use to virtually meet with others - either by video or audio-only or both, all while conducting live chats - and it lets you record those sessions to view later.
A Zoom Meeting is a video conferencing meeting that's hosted using Zoom while a Zoom Room is physical hardware that companies canm install in meeting rooms.
One of the best features is the tiled view, so you can have everybody on screen at the same time - even if you have tens of participants.
If you want to know if you're in good company when using Zoom, you are: over half of Fortune 500 companies reportedly used Zoom in 2019.
Best for G Suite (Google apps) users
While Google Duo (below) is more of a one-to-one solution, Google Hangouts is Google's option for video calling. It does have a separate app, but most people who use it are customers of Google's G Suite, which is basically Gmail, Calendar and Docs but for business.
You can start hangouts from Gmail or Google Calendar and you can video chat with individuals, conference or just text chat.
Best for calling across PCs and Macs (as well as mobile devices)
Since Microsoft has taken the helm of Skype the number of changes hasn't been huge and there are still issues with video calls, messaging synching across devices and international use.
Even so, Skype is one of the most ubiquitous solutions and as such it's a good option just because so many people have it - as well as PC and Mac, it's also available for iOS and Android of course. And you can even now access it via a web browser. The group calling feature is also really powerful.
It also integrates nicely with Office 365 and if you use this for work you'll be familiar with Skype for Business.
Best for perpetual office chat and one-to-one calling
Slack is a little different to the competition as it's more of an open platform. It works as a central place for communication that pulls in third-party apps to make it work.
It's meant for team communication - we use it here at Pocket-lint - and is a great way to share files (it also integrates with Google Drive or Dropbox). The free version enables you to make calls but only one-to-one; you need a paid subscription to call a group.
Another great feature of Slack is its ability to search entire conversations for certain words so finding what's been talked about is easy. The app is iOS and Android friendly and autocompletes friends' names making tagging them simple.
Best for calling between Android devices
Relatively recently brought out by Google, Duo is free to use, enables one-to-one video and voice calls and it works across both iOS and Android devices - unlike Apple's FaceTime. It's primarily an app for consumers rather than business - Google Hangouts is Google's work calling solution.
It relies on your number, lets you reach people in your phone's contacts list, offers end-to-end encryption, and has nifty features like Knock Knock, which allows you see live video of your caller before you answer.
The best Skype alternative
Viber is a comprehensive alternative to Skype. It was primarily a service for calling directly between devices, but it now also has WhatsApp style chat and can be used to share files.
One of the great things about Viber is how widely available it is across platforms including Android, iOS, Windows Phone, BlackBerry, Windows 8, Mac and more. That means video calling across devices or chatting using IM with emoticons should be seamless and simple. Plus it's all free.
Another great Skype alternative
WeChat is being hailed as the one-stop-shop alternative to most communication apps. It's like combining text, Skype, Facebook, Twitter and Instagram into one app.
WeChat enables you to share photos and videos directly with other users or they can be posted to their profile, like the Facebook wall. Another feature, called Shake, allows users to find others nearby to chat locally.
WeChat also allows voice chat, group chat, video chat and emoticon sharing. And it's all free to download.