Question: I'm looking for a tool to create a custom CRM system that integrates with my existing data sources, do you know of any?

First up is ILLA Cloud, a full-featured platform that lets you build custom data analysis dashboards and internal apps. It connects to a range of data sources, including PostgreSQL, MySQL and Google Sheets, and to AI agents for processing. ILLA Cloud also has automation and customization abilities, making it a powerful foundation for a custom CRM system.

Another good option is Lemonado, a no-code platform that lets people build business software without having to write any programming code. Lemonado has connectors to Google Sheets, CRMs and Airtable. It also has AI tools and real-time collaboration abilities, which can be very useful for managing your data and workflow.

If you're looking for something more specialized, Softr could be a good choice. Although it's geared for building custom client portals and internal tools, Softr can connect to Airtable and Google Sheets data sources. Its drag-and-drop interface and prebuilt blocks make it accessible even if you don't know how to code, so it's a good option for building a custom CRM.

If you want something more general purpose, Noodl is an open-source, AI-boosted low-code platform. It lets you build full-stack custom apps quickly with a visual interface and integration with third-party services and APIs. That can be useful if you want to expand your CRM system while still keeping it flexible.