josm software package provides Editor for OpenStreetMap, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install josm
josm is installed in your system.
Make ensure the josm package were installed using the commands given below,
$ sudo dpkg-query -l | grep josm *
You will get with josm package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Utilities |
| Package | josm |
| Version | 0.0.svn11223+dfsg-1 |
| Description | Editor for OpenStreetMap |
| Sub Section | Utils |