Linphone is a Windows utility that allows users to communicate with others. Similar to Skype, OnSIP and Google Voice, the program is based on the common Session Initiation Protocol standard. Additionally, it is possible to exchange files over the network.

Communications

You can place and receive high quality video calls. Supported codecs include G.722, Opus and VP8. Moreover, there are tools for organizing conference calls with multiple participants.

It is possible to exchange text messages. A collection of custom emojis is provided. Users are able to send images, video clips, text documents and other files to their contacts as well. Important calls can be recorded to the hard drive for further analysis. The output quality is adjustable.

Security

All personal data is automatically encrypted with modern protection algorithms to prevent unauthorized access and leaks. This is helpful for ensuring that your private video and audio calls will stay that way even in the event of a security breach.

You are able to create and edit a list of contacts. Multiple phone numbers and other personal information can be added to each entry.

Features

free to download and use;
offers you instruments for communicating with other people over the network;
it is possible to send and receive instant messages;
users can make audio and video calls;
integrated encryption algorithms are helpful for preventing data leaks;
compatible with modern versions of Windows.