[D9u]

...we get rid of all these non-free web applications?

How you ask?

Build your own free apps. Publish. ??? Profit!

[giulivo]

indeed that is what in these days I would consider interesting and eventually title "Returning to Free Software" ... have you got experiences to share on the matter?

And speaking about practical solutions, I know of identi.ca and libre.fm , do you know of others?

[zmalltalker]

For Git hosting there's Gitorious, licensed under the AGPL.