In addition to allowing you to answer Skype calls from your lockscreen just like a regular phone call and store your Skype contacts in Apple's Contacts app, the updated Skype apps also let you use Siri voice commands to start a Skype call.

This update to Skype will hide your IP address by default, and it protects professional gamers and streamers from DDOS attacks.

Facebook has rolled out video calling for its Messenger platform in select countries, with support in other regions to follow in the coming months.

Viber has released version 5.0 of its Android and iOS apps. Viber 5.0 is a major update as it's the first time the mobile apps are able to do video calling.

Razer has released Razer Comms v1.40, which features peer-to-peer File Transfer to individuals and groups, and improved audio quality. Also, bugs like audio stutter, inconsistent behavior when muted/unmuted, as well as crashes while changing audio devices, has been fixed.

Built with advanced in-game overlay functionality and cross-game chat support, Razer Comms offers crystal-clear VoIP and versatile instant messaging with group chat capabilities.

Facebook has just launched a free VoIP call service via their Messenger app for iPhones. This feature is limited to US iPhones for now, with no further information on when this feature will appear for users outside of US.