Chart.js - Easy, object oriented client side graphs for designers and developers.

Nolt - A fast & beautiful way to collect user feedback

Hypi - Hypi is a no-code and low-code web and mobile app development platform that allows developers, designers and entrepreneurs to build a serverless application quickly.

UseResponse - Open-source, self-hosted customer feedback software, live chat and helpdesk system that you can install on your server. Organize documentation using knowledge base and get feedback from social networks with centralized system

Visme - One easy to use online tool to visualize your ideas to engaging Presentations, Infographics and other Visual Content.

UserVoice - UserVoice integrates easy-to-use feedback, helpdesk, and knowledge base management tools in one platform that empowers users to speak and companies to understand.