How to synchronize Tomboy notes

You can set up Rainy to run on your Ubuntu or Windows machine, and use it as the sync server in your Tomboy and Tomdroid clients. There is more information on Rainy and how to set it up at that link.

Personally, I prefer to use Everpad (linux version of Evernote) as it offers greater functionality:

• Cross platform syncing & editing (unless I'm mistaken, Tomdroid still doesn't offer editing)
• Great Unity integration
• Notes, notebooks, tags, file attachment support
• Massive extensibility through Chrome/Firefox extensions

Have a look at Evernote's official site or take a look at the Wikipedia page

To install Everpad in Ubuntu (12.04 and later*):

sudo add-apt-repository ppa:nvbn-rm/ppa
sudo apt-get update
sudo apt-get install everpad

You do have to sign up to the service to use it, but it's free (which a paid version available too).
Log out and in again to get the lens to work.

If you use Gnome Shell, there's support available on the git page (see link below).

*Different sources say different things: Webupd8 say that 11.10 onwards is supported, but the official Everpad git repository says 12.04 onwards.