Skype is an instant messaging and VOIP (Voice Over Internet Protocol) client to communicate with people in a distant place. Developed by Microsoft
License: Freemium
Skype is a widely used VoIP service that offers high-quality video and audio, but requires a Microsoft account and can be resource-intensive. Ekiga, on the other hand, is an open-source alternative that emphasizes privacy and customization but has a steeper learning curve and is less popular.