MicroSIP is a lightweight, open-source VoIP software that enables users to make high-quality audio calls over the internet. This program is designed to be simple and easy to use while ensuring minimal burden on system resources. With MicroSIP, users can manage contacts, make voice calls, and transfer audio streams securely using the SIP protocol, making it a suitable choice for personal or small business communications. The software supports standard SIP features, including voice codecs and secure communication with end-to-end encryption.