# Open-source voice calls

4 open-source voice calls rated against public privacy criteria.

1. [Baresip](https://privacyratings.com/voip-clients/baresip/): B (80/100). Portable, modular SIP client with audio and video calling, mainly used from the command line. It supports SRTP, ZRTP and many audio and video codecs.
2. [Mumble](https://privacyratings.com/voip-clients/mumble/): C (65/100). Open source, low-latency voice chat client and server (Murmur) for groups, with encrypted connections and self-hosted servers.
3. [Linphone](https://privacyratings.com/voip-clients/linphone/): D (50/100). Open source SIP softphone for audio and video calls and instant messaging, with end-to-end encrypted chat and apps for Android, iOS, Windows, macOS and Linux. Developed by Belledonne Communications.
4. [MicroSIP](https://privacyratings.com/voip-clients/microsip/): F (30/100). Lightweight portable SIP softphone for Windows, built on the PJSIP stack, for voice and video calls through any SIP provider.

Source: https://privacyratings.com/open-source/voip-clients/