StatCounter - StatCounter is a simple but powerful real-time web analytics service that helps you track, analyse and understand your visitors so you can make good decisions to become more successful online.
Datomic - The fully transactional, cloud-ready, distributed database
Histats - Start tracking your visitors in 1 minute!
Valentina Server - Valentina Server is 3 in 1: Valentina DB Server / SQLite Server / Report Server
Matomo - Matomo is an open-source web analytics platform
Google Cloud Datastore - Cloud Datastore is a NoSQL database for your web and mobile applications.