Jami is a viable alternative to Zoom that is designed with the freedom and privacy of users in mind.

One nice security/privacy feature for Jami is that it is entirely peer-to-peer and doesn't require a server for relaying data between users. Also, users who are on the same local network will be able to communicate even when they are disconnected from the internet. It also can be used without any restrictions on file size, speed, bandwidth, features, number of accounts, storage, or anything else.

Unlike some other similar apps on the market these days, Jami requires no personal information to be provided when creating your account - a plus in our book.

Jami Features:

SIP-compatible with OpenDHT support

Unlimited number of calls

Instant messaging

Searchable call history

Call recording

Attended call transfer

Automatic call answering

Call holding

Audio and video calls with multi-party audio and video conferencing

Multi-channel audio support

Streaming of video and audio files during a call

TLS and SRTP support

Multiple audio codecs supported: G711u, G711a, GSM, Speex (8, 16, 32 kHz), Opus, G.722 (silence detection supported with Speex)

Multiple SIP accounts support, with per-account STUN support and SIP presence subscription

DTMF support

Automatic Gain Control

Account assistant wizard

Global keyboard shortcuts

Flac and Vorbis ringtone support

Desktop notification: voicemail number, incoming call, information messages

SIP Re-invite

Address book integration in GNOME and KDE

PulseAudio support

Jack Audio Connection Kit support

Locale settings: French, English, Russian, German, Chinese, Spanish, Italian, Vietnamese

Automatic opening of incoming URL

End-to-end encryption used for chat, video, and voice

Decentralized (but need internet connection over ISP)