Knack - Knack is the easiest, most spectacular business management software available.
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
Ragic - World's most advanced online database engine. Build powerful online databases with simple Excel style online interface.
Zoho Creator - Zoho Creator is a low-code application development platform that helps you build a custom, mobile-ready apps to run your business.
SAP MaxDB - The SAP MaxDB database (formerly SAP DB) is developed and supported by SAP AG.
Cellica - Read and write to your databases without any programming changes.