Here you will find a collection of useful and sometimes innovative tools for various data treatment tasks, like conversions, visualisations and more.
Handy tool to aggregate and visualize time series data. Generate print quality heatmaps in seconds.
A handy color gradient generator for use in visualisations and other contexts.
Try this innovative chart, aimed at time series data with three variables.
All tools on this site are free to use, but I'd be happy if you would give med some credit by mentioning or linking to the site.