NateI've been using Pixelfed a bit recently. There's still quite a few kinks in the interface, but other than that, I'd say it's definitely shaping up to be a legitimate contender against Instagram. Well, at least for the people like us.
Jonkman Microblog is a social network, courtesy of SOBAC Microcomputer Services. It runs on GNU social, version 1.2.0-beta5, available under the GNU Affero General Public License.
All Jonkman Microblog content and data are available under the Creative Commons Attribution 3.0 license.