digfishChangeDetection Android App
Changedetection.io detects changes in the pages that you frequently visit. It is opensource and you can host in a server of your own. It has its own API in which I based these small prototype Android app.
Bobinas P4G is a social network. It runs on GNU social, version 2.0.1-beta0, available under the GNU Affero General Public License.
All Bobinas P4G content and data are available under the Creative Commons Attribution 3.0 license.