Download the latest H2GIS web interface on the home page, unzip it and finally run the jar called h2-dist. Then click on Connect in the web interface. You will of course need a working Java runtime environment.
Command-line gurus, just execute the following commands:
Initialize the spatial extension
Spatial functions will not be available until the following request is executed:
To open a shape file and show its contents:
This is the built-in web interface of the H2 Database:
Graphical user interface
Software GUI that use H2GIS: