The ltxtable combines the functionalities of longtable and tabularx.
The trick is to put your longtable using tabularx-style X columns in a separate file, and then include this file in your main document using the command \LTXtable.
Version 1.3 (9/9/13)
This template has been downloaded from:
Frits Wenneker (http://www.howtotex.com)
CC BY-NC-SA 3.0 (http://creativecommons.org/licenses/by-nc-sa/3.0/)
This popular visualization of the Porter Value Chain is a great example of how LaTeX can be used to produce striking, high quality formatting of simple objects such as tables.
Originally posted as this answer on TeX StackExchange, we've pre-loaded the table into Overleaf to let you easily add your own content. Simply click the table to start editing online.
Once you're done, you can insert the table into a longer LaTeX document, or download as a PDF for use as a standalone piece.
If you're new to LaTeX, checkout the third part of our free online LaTeX course for more hints on creating presentations and drawings in LaTeX.