Fluxer

What is Fluxer?

Fluxer is a free and open source instant messaging and VoIP platform designed for friends, groups, and communities. Developed by Hampus Kraft, a computer engineering student at KTH Royal Institute of Technology in Sweden, the project has been in development for approximately five years and recently transitioned to full-time development. The platform provides core communication features including text messaging and voice calling capabilities, positioning itself as an alternative to proprietary messaging services. As an open source project, Fluxer's codebase is publicly available on GitHub, allowing users and developers to review, modify, and self-host the platform according to their needs. Fluxer targets users seeking private communication tools with transparent, community-driven development. The project is particularly suited for individuals and groups prioritizing data sovereignty through self-hosting options. The platform is currently in active development, with the creator noting ongoing work to streamline self-hosting setup and reduce infrastructure requirements. Being open source and free to use, Fluxer appeals to privacy-conscious users, developers interested in contributing to communication infrastructure, and communities seeking alternatives to centralized messaging platforms. The project represents a community-focused approach to instant messaging and VoIP services with an emphasis on transparency and user control.