SpotMaze v0.1 was built in about 48 hours in the Yahoo Open Hack Day and eventually became the product for the company (Cruns) I founded. The product was a secure and private search engine for all of your Personal Digital Data.
Everything from documents on your disk to cloud, photos, videos, social network updates, browsing history, etc., were indexed on a separate search engine for each user. The user had complete control over what data to be indexed and was able to delete them immediately.
Tech: Python, Flask, ElasticSearch, Postgresql, Apache Tika.