The best alternatives to InvertedStone are Whalesync, NocoDB, and Dapper. If these 3 options don't work for you, we've listed a few more alternatives below.
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Whalesync is a no-code tool that lets you instantly 2-way sync data across apps like Airtable, Webflow, Notion, Postgres, & Bubble. Deeply connect the tools you love in minutes to build internal tools, programmatic SEO pages, and more. http://whalesync.com/
NocoDB is an open source Airtable alternative. It transforms your relational databases into a smart spreadsheet. Our app store allows you to connect to any cloud services like S3 for file storage and 3rd party apps like Slack, Twilio for business workflows
Dapper brings features from MongoDB to Airtable. How? We connect your Airtable & MongoDB to sync data both ways. Get the scalability of a backend database, but use Airtable as your interface to read & write data without ever having to look at your MongoDB.
Datawind brings all features of Postgres to Airtable. How? We connect your Airtable & Postgres database to sync data both ways. All data actually lives in Postgres, but you can use Airtable as your interface to read & write data without ever opening Postgres.