New to fosm? Start by signing up to get a user account.
Once you have a user account you can start editing using one of the map editors listed below.
If you are familiar with OpenStreetMap you might want to find out about the differences between OpenStreetMap and fosm.
JOSM is a commonly used editor for fosm.
To use an existing JOSM install to edit fosm content you will need to make the following configuration change:
Merkaartor is another commonly used editor for fosm. You can get it here
To use Merkaartor to edit fosm content you will need to make the following configuration change: