According to the Global Software Top 100 (2011 edition), 6 CAD/CAE/PLM software companies are among the top 100.
They are Dassault Systèmes, Autodesk, PTC, Siemens (UGS), Mentor Graphics and ANSYS.
Dassault and Siemens have the complete ecosystem: CAD-CAM-CAE-PLM. Autodesk and PTC reply more on CAD. Mentor Graphics has a limited presence beyond in the electronics industry. ANSYS is an interesting company focusing only CAE.
Compared with the rank of the previous year (2010), all these 6 companies climbed some potions varying from 1 to 4. This indicates the demands for CAD/CAE/PLM are getting stronger. The following table illustrates the ranking of these 6 companies in the last three years.
| Company | 2011 Position | 2010 Position | 2009 Position |
| Dassault Systems | 19 | 22 | 17 |
| Autodesk | 22 | 25 | 16 |
| Siemens | 49 | 50 | 40 |
| Mentor Graphics | 77 | 80 | 66 |
| ANSYS | 92 | 96 | 75 |
We will analyze these companies, as well as other CAD/CAE/PLM software companies in other articles.
The following table illustrates the ranking of these 6 companies in last three years.
Company 2011 Position 2010 Position 2009 Position
Dassault Systems 19 22 17
Autodesk 22 25 16
Siemens 49 50 40
Mentor Graphics 77 80 66
ANSYS 92 96 75
What is the sixth company and what are its numbers?
PTC .. no numbers