Description: MicroSIP is an open source SIP softphone and instant messenger for making VoIP calls and sending IMs over the Internet. It supports standard SIP accounts from various providers and has features like audio/video calling, chat, presence, and more.
Type: software
Pricing: Open Source
Description: Ubuntu is a free and open source Linux distribution based on Debian. It is easy to use, highly customizable, and has a large community supporting it.
Type: software
Pricing: Free