Plain-app is a multi-purpose toolset for self-hosted device management, providing a web-based dashboard to remotely access files, system settings, and notifications on a mobile device over a local network. It functions as a remote gateway for SMS and notifications, a peer-to-peer file transfer system, and a media server for streaming content to browsers or casting to televisions via DLNA and Chromecast.
The project emphasizes secure local connectivity, utilizing TLS and XChaCha20-Poly1305 encryption to protect traffic between the mobile device and the browser. It also includes a distraction-free Markdown note-taking application for personal knowledge management.
Beyond remote management, the software supports real-time screen mirroring of device displays and notifications to a remote browser. It provides capabilities for local file organization, RSS feed reading, and project and issue tracking through a mobile interface.