pySlip is a 'slip map' widget for wxPython.
During my work writing geophysical applications in python I often wanted to display a map that was very large - many hundreds of thousands of pixels in width. I searched around for a GUI solution that would work rather like Google maps: tiled, layers, etc. I couldn't find anything that didn't assume browser+map server. So I wrote my own wxPython widget. This worked well for cartesian self-generated maps and has been extended to handle non-cartesian maps and tiles sourced from places like OpenStreetMap.
It's a poor thing, but solves my problem. I'm placing it here in the hope that someone else may find it useful. If you find it useful, or make improvements to it, drop me a line.
The earlier 3.0.x release was for python 2.x only on Windows, Linux and macOS. This version works with wxPython 4.0+ and Python 3.6+. It may work on earlier python 3 versions, but this has not been tested. It has been tested on Linux but not Windows or macOS, yet. Earlier version did run on Windows and MacOS, but I no longer run Windows and wxpython won't work on MacOS inside a virtual environment.
The widget API is documented in the wiki.
You install pySlip in the usual PyPi way: pip install pyslip .
Before running the pyslip_demo.py program you must copy the pySlip/pyslip/examples/gmt_local_tiles.zip file to your home directory and unzip it there. That should create a directory named gmt_local_tiles.