API Connector by Mixed Analytics - Connect any API to Google Sheets.
Quickwork - The #1 integration and automation platform chosen by enterprises to build workflows, publish APIs, and manage conversations.
SheetHub - SheetHub turns your spreadsheets (either Google Sheets or Excel Online) into a REST-ful JSON API.
Prompt API - Prompt API is a curated API marketplace with high scalability and security for developers.
Hoss - Track and manage third-party APIs
Zoho Flow - Zoho Flow is an integration platform for effortlessly connecting web applications and automating complex business workflows.