Sesame Database Manager - Lantica Software, LLC - Sesame, A Q&A-compatible Database Manager.
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
Sheep - Membership and events for SMEs and nonprofits
Spreadsheet.com - Spreadsheets that come alive as applications
DbFace - DbFace is an online database application & report building tool.
Rows - The spreadsheet where teams work faster