I have written 2 products with node-based UIs. https://www.easydatatransform.com https://www.easydatatransform.com : A node based data transformation (ETL) too

I have written 2 products with node-based UIs. https://www.easydatatransform.com https://www.easydatatransform.com : A node based data transformation (ETL) tool where nodes are inputs, transformations (61 to choose from) and outputs. https://www.hyperplan.com https://www.hyperplan.com : A card-based task planner. The Professional edition supports drawing connections between tools (e.g. dependencies). It will auto-layout a graph based on the connections (which was a challenging bit of programming).