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
Knack - Knack is the easiest, most spectacular business management software available.
CentriQS - CentriQS offers small business management software and custom database solutions for small and medium enterprise businesses.
Zoho Creator - Zoho Creator is a low-code application development platform that helps you build a custom, mobile-ready apps to run your business.