Fluxer

Fluxer is a comprehensive communication platform that prioritizes user privacy and community building. This free and open-source messaging app offers everything you need to connect with friends, organize groups, and build thriving communities.

Core Features:

• Full messaging suite with Markdown support, private DMs, group chats, and organized channels
• Voice and video calls with screen sharing, noise suppression, and multi-device support
• Advanced moderation tools including granular permissions, audit logs, and webhook support
• Powerful search with message history filtering and quick switcher functionality

Customization & Control:

• Upload custom emojis and stickers to personalize your experience
• Apply custom CSS themes and display options for a tailored interface
• Self-hosting capabilities - run your own instance with full control over your data
• Switch between multiple instances seamlessly

Built for Privacy: Made in Sweden with a focus on transparency, Fluxer is fully open source under AGPLv3 license. The platform supports responsible disclosure through their security bug bounty program and maintains active community involvement through their beta program.