MCDB is an open source, cross platform program which will help you to easily manage your hobbyist electronics lab.
You can store, through the program, all of your components in a database file, in this way you can monitor the availability of each component in order to buy new parts before finishing them. You can also store your database files on a cloud service in order to access them from everywhere, you'll just need a PC with MCDB installed.
MCDB will be available on the Ubuntu...