UPEX
ERP and ERP SAP Upgrade Explorer Tool (UPEX) is an ABAP based ERP and ERP's proprietary tool which can be used in pre-upgrade analysis. This tool can be used to get technical and basis related information of current processing environment.
This tool gives the following information
1. Information about ALL development objects
2. Program size ( no of lines )
3. Application Module of the programs
4. Custom forms in different applications
5. Languages Installed
6. Hardware platforms
7. Landscape information
8. Software components and their package levels
9. Used Programs/Transactions ( ST03 )