The best alternatives to Social Express are Jotform, June, and Cube.js. If these 3 options don't work for you, we've listed a few more alternatives below.
Jotform is a full-featured online form builder that allows you to create powerful forms and securely gather data from any device. With our intuitive drag-and-drop builder, you can create and share custom online forms to generate leads, distribute surveys, collect online payments, and much more — all without any coding.
Cube.js is an open source modular framework to build analytical web applications. It is primarily used to build internal business intelligence tools or to add customer-facing analytics to an existing application.