https://www.zjget.com/
ZJGet Secure Browser | DRM-X 5.0 Client | Encrypted Video, PDF DRM & Anti Screen Recording Solution
ZJGet is a DRM secure browser based on Chromium. As the official client of DRM-X 5.0, it supports secure access to encrypted video, audio, PDF documents, web...
https://proton.me/meet?ref=pvpn_lp_b2c_vpn_submenu
Proton Meet: Secure, end-to-end encrypted video conferencing | Proton
Proton Meet is a secure, privacy-first video conferencing tool that protects your video calls with end-to-end encryption.
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https://signal.org/blog/how-to-build-encrypted-group-calls/
Signal Blog How to build large-scale end-to-end encrypted group video calls
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