Tumblast

A 3rd-party full-featured universal native Tumblr client. Stable, powerful, rich customization settings.
Featured functions:
-Support multiple windows.
-Manage saved photos and videos.
-Create animated GIFs from your local videos
-Convert an animated GIF to mp4
-Capture an animated GIF by camera
-Can specify the image source of the primary live tile
-Tag manager to add tags easily
-Paste local photos, a photo link, a screenshot or a bitmap captured by other tools directly to the photoset post editor from clipboard
-App PIN lock
-Waterfall blog image viewer.
-Tag based post blacklist
-Offer a lot of options for customization
-Share link or photos by post
-Live videos supported
-Submission
-Dashboard, explore, messaging, account and notification
-Search all blogs and posts in tumblr
-Visit any public blog directly by blog name
-All post types are supported : photo, video, audio, text, link, quote, chat
-Change the layout of a photoset post by drag-drop
-Publish a composed post directly, add it to queue, or just save it to drafts
-Edit any post in your blog, post queue or drafts
-Save images and videos to local
-Hold the reblog button to perform a quick-reblog action
-Multiple login accounts supported
-Browsing history
-Edit the settings and theme for your blogs