Quadrix

- No data collection

- Completely free, no ads

- Does not support End-to-End Encryption

- Video-conferencing (uses Element Call -- https://github.com/vector-im/element-call#readme)

- Desktop apps for Windows, MacOS, and Linux (amd64, arm64, armhf)

- Mobile apps for Android and iOS

- Unique top-down messaging feed

- Ideally used with a private Matrix homeserver -- https://matrix.org/docs/guides/installing-synapse

- Open source on github -- https://github.com/alariej/quadrix

- Interested to sponsor this project? -- https://github.com/sponsors/alariej