Good2600 is an Atari 2600 ROM tool by Cowering. It currently has support for 2,687 different entries. This is a Dos utility but can be used with the GoodWindows frontend as well as any others that support these tools. Check out the GoodWidnows frontend, posted in the Windows section.
Also tested and usable under Linux with Wine by copying the Good2600.exe and Goodinfo.cfg files to the desired ROM directory and issuing on the command line:
wineconsole Good2600.exe rename
Also tested and usable under Linux with Wine by copying the Good2600.exe and Goodinfo.cfg files to the desired ROM directory and issuing on the command line:
wineconsole Good2600.exe rename