Our organization is evaluating Self Hosted Team Chat platforms for internal communication, particularly for environments where data privacy and compliance are important. We're looking for features such as: End-to-end encryption On-premise deployment Group messaging and team channels Audio and video meetings Secure file sharing Screen sharing Administrative controls Integration with existing business systems For those who have deployed a self-hosted communication platform, what has your experience been? Which features have been the most valuable, and what challenges did you encounter during implementation? We've been researching several enterprise solutions, including Troop Messenger, Mattermost, Rocket.Chat, and Nextcloud Talk. If you've used any of these, I'd appreciate hearing about their strengths and limitations in production environments.