Grubba.net - The free web based online database for home and office.
Datomic - The fully transactional, cloud-ready, distributed database
Knack - Knack is the easiest, most spectacular business management software available.
MarkLogic Server - MarkLogic Server is a multi-model database that has both NoSQL and trusted enterprise data management capabilities.
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
Datahike - A durable datalog database adaptable for distribution.