The Personal Avatar (aka Pavatar) is a personal picture hosted on your webspace
self hosted web photobook, aimed extensibility of piwigo and beauty of lychee
Simple Blog hosted on Google Drive, with Google Apps Script backend and Articles wrote in Google Docs and published using the Publishing feature
A list of popular/awesome videos games, add-on, maps, etc. hosted on GitHub. Any genre - text adventures, educational games...
Self hosted graphs for Git repositories in PHP http://www.codingswag.com/git-pretty-stats