TablePress is actually a rather old plugin that was developed by some clever soul, which enables WordPress website editors and other admin users to relatively easily include HTML <table> content on website pages and posts. It's actually a deceptively feature-packed solution, which is handy seeing as WordPress doesn't offer native support for HTML tables (that I know of).
The table you see on this page is powered by and edited using the TablePress admin area tools - but the key problem (as per usual for such content) is that HTML tables (or any tabulated content for that matter...) does not display particularly well on smartphone devices and other (small) handheld devices (e.g. iPads, etc.).