Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
Flatfile 3.0 – Embeds - Meet Flatfile 3.0, the fully re-imagined platform for onboarding customer data into your product.
FriendlyData - Communicate with databases like a human
csvbox - Spreadsheet importer for your web app, SaaS or API
SpreadsheetDB - A database that you can query with spreadsheets
SQLizer API - Build a continuously-deliverable data migration pipeline