I'm using Org-mode which can export to LaTeX -> PDF [0]. I use Org-mode for invoices [1], reports, time-tracking, etc. Using org-babel you can use Gnuplot[2] or R [3] to embed charts and other visuals.

[0]: http://orgmode.org/manual/LaTeX-and-PDF-export.html#LaTeX-an...

[1]: http://orgmode.org/worg/org-contrib/

[2]: http://orgmode.org/worg/org-contrib/babel/languages/ob-doc-g...

[3]: http://orgmode.org/worg/org-contrib/babel/languages/ob-doc-R...