Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.
ServiceM8 - ServiceM8 (Service Mate) is cloud software that allows you to manage any service business. Manage jobs, produce mobile quotes and invoices on the go. Get Control.
MIT App Inventor - App Inventor is a cloud-based tool, which means you can create apps for phones or tablets right in your web browser.
Fergus - Job management software for plumbers & electricians
Bubble.io - Building tech is slow and expensive. Bubble is the most powerful no-code platform for creating digital products.
Clik - Clik Service helps field service industries organise every aspect of their business. The most important features include scheduling engineers, creating bespoke reports, invoicing, managing customers, raising job sheets and tracking stock.