rawpython/remi

Remi is a small Python library for building graphical user interfaces that show up in a web browser instead of a native desktop window. The whole library fits in under 100 kilobytes of source code, and it works the same way on Windows, Linux, and Android, including on a Raspberry Pi, where it is handy for controlling a script remotely from a phone. The key idea is that you write your interface entirely in Python. You never touch HTML directly. When your application starts, Remi runs a small web server and automatically translates your Python widgets, like labels, buttons, and layout boxes, into a page you view at an address such as http://127.0.0.1:8081. You build the interface by creating an App subclass with a main method that assembles widgets into containers and returns the root widget, then attach behavior by connecting events like a button's onclick to your own callback functions. Installation is a single pip install remi for the stable release, or cloning the repository and running the setup script for the latest experimental code. Beyond the core library, the project includes a drag and drop GUI editor in its own folder for people who prefer building layouts visually rather than in code. The README frames Remi as an alternative to GUI toolkits like Kivy, PyQT, and PyGObject, which need native code compiled for whatever operating system you are on. Remi avoids that entirely since all it needs is a web browser. Startup options let you control things like the network address, port, whether multiple users get separate app instances, caching, update frequency, basic HTTP authentication, and SSL certificates for encrypted connections. Widgets also share simple sizing options, letting you set width and height either in pixels or as a percentage string. This project suits Python developers who want a lightweight way to add a simple graphical interface to a script or tool without learning web frontend technology or bundling a heavier GUI framework. It is released under the Apache License.