TumblRipper is a tool designed to backup your blog's images with just a few clicks. It supports updating and will only download new images, unless you ask it to!
* Supports Tumblr blogs, Tumblr tags, 500px, Instragram , and FlickR.
* Auto-update from application.
* Automatically download all photos and videos from a given blog.
* Photosets support for Tumblr
* Will always retrieve highest possible resolution (not just the thumbnail).
* Only photos you don't already have yet will be downloaded.
* As light as possible on the servers.
* Keeps the original dates from the original upload!
The software is donationware. For every donation, you'll receive a serial, unlocking some advanced features, allowing faster downloads, and multiple tumblr accounts
Direct download: http://www.zark.be/software/get.html?file=TumblRipper.exe