GeoSpark - Location tracking SDK with 90% less battery drain 🔋
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Pilgrim SDK - Foursquare's superpower is now available to all developers
Qiqqa - Qiqqa is a free research and reference management software. It can be used in many organizational projects from the academic to the personal to the business endeavor. Read more about Qiqqa.
Hit Me Up! - Get notified when your friends arrive/leave a location!
JabRef - Graphical Java application for managing bibtex (. bib) databases.JabRef · JabRef Help · JabRef | Blog · OpenOffice/LibreOffice .