drawio-desktop
Drawio Desktop is an Electron-based application for creating diagrams and whiteboards securely. It operates independently from the internet, providing total privacy, and is free to use under the Apache 2.0 license, provided no code modifications are made. Support is available through its GitHub repository, though external contributions are not permitted. Users are encouraged to submit feedback and report bugs. Development can be carried out using npm, with installation packages available via the official GitHub page.