PostWarden keeps the posts from all of your Tumblr blogs archived safely in your computer. It lets you quickly browse through your posts and write drafts even without an Internet connection.
What it does: It archives all your posts so you can access them at all times. It supports offline drafts so you can post them later to any of your blogs. It lets you view, edit and delete your posts. It provides quick posting from the menu bar icon. It archives your posts silently in the background. It supports multiple accounts and blogs. Trial version limitations: Archiving is limited to 500 posts per blog. Composing is limited to 30 new posts or drafts. Limited to one Tumblr account.