Imagine your desktop screen populated with 12 bobbling heads during a video call. This is ooVoo's generous free service in action. As long as the call host uses ooVoo's software, participants at the other end simply click a browser link to join the call. The free version, which works on Macs, PCs, iOS, Android and tablets, lets you record video calls, upload them to YouTube, and record video greetings (PC only). The call overseer can also patch people in on regular phone numbers, and ooVoo's rates apply in this scenario.
On the downside, the free version displays third-party ads, calls are not encrypted -- and you can't share screens. It doesn't cost much to banish the ads and allow screen-sharing, though: $3 per month or $30 a year for ooVoo's premium plan. The paid plan also gives you roughly 16.5 hours (or 1,000 minutes) of video storage.