Blot turns a folder into a blog. You can synchronize your blog’s folder with any of the following clients. You can switch your blog seamlessly between clients at any point. Please contact me if there’s a client you’d like me to add.
You can switch seamlessly from one client to another at any point.
You can manage multiple blogs from the same account. Each blog is independent: you could use Dropbox with one and Git with another. Your blogs can use the same Dropbox account, or different accounts.