Klark + Klara: Corporate Messenger and Task Manager Hosted on Your Own Server

A development team has introduced their own corporate tool stack: the Klark messenger and the Klara task manager. The solution was built using FastAPI and React to ensure full data control and independence from third-party cloud services. In the article, the authors describe the motivation behind creating internal tools, the system's architectural features, and share their experience in overcoming technical challenges encountered during development and deployment. The project demonstrates an approach to building custom solutions for optimizing internal company workflows, highlighting the benefits of self-hosting. The developers discuss the functional capabilities of the applications, as well as the mistakes made during implementation and how they were resolved, offering the community an inside look at the corporate software development process.