1. Softr
Best for client portals & internal apps$19 /mo · Basic, annual·Free tier: 1 app, Softr branding·We earn a commission
Softr's $19/mo Basic plan turns an Airtable base or Google Sheet into a working client portal or internal app fast — the spreadsheet is the backend, no database to manage. Pick it when your data already lives in a sheet and you need logins and records, not a hand-crafted site.