Amazon Textract is described as 'Machine learning service that automatically extracts text, handwriting and data from scanned documents that goes beyond simple optical character recognition (OCR) to identify, understand, and extract data from forms and tables' and is a document scanner in the online services category. There are more than 10 alternatives to Amazon Textract for Web-based, SaaS, npm and Self-Hosted. The best Amazon Textract alternative is Midship. It's not free, so if you're looking for a free alternative, you could try Nanonets or Documind. Other great apps like Amazon Textract are Klippa DocHorizon, Invoice OCR, DigiParser and ZeraBooks.
Integrating Textract with other tools/apps is not as easy and intuitive as Klippa DocHorizon. If you're not a technical person and you don't want to spend all day looking through the documentation, then you're better off using a simpler tool like Klippa DocHorizon :)