6tag (formerly known as 6tagram) which was previously in beta mode, is now available in Windows Phone Store. 6tag is a FULL featured Instagram client which allows you to upload picture and videos, apply filters, tag your friends, view posts on a map, etc

App features include:

100% original filters: XPro-II, Earlybird, Rise, Amaro, Hudson, Lo-fi, Sutro, Toaster, Brannan, Inkwell, Walden, Hefe, Nashville, 1977, and others.
Video recording with cut scenes
Linear and Radial Tilt-Shift blur effects for extra depth of field.
Instant sharing to Facebook, Twitter, Flickr, Tumblr and Foursquare, VK
Unlimited picture uploads
geotag your posts
Interact with friends through giving & receiving likes and comments
Front & Back camera support
And much much more…

Source for download http://www.methmogul.com/2013/08/6tag-windows-phone-8-instagram-client-now-available-in-store.html