A CLC Workbench can be run without a valid license in "Viewing Mode". In this mode, import, export and viewing functionality is available. Please refer to the manual for further information about this mode.
 

CLC Genomics Workbench  
http://resources.qiagenbioinformatics.com/manuals/clcgenomicsworkbench/current/index.php?manual=Viewing_mode.html

CLC Main Workbench 
http://resources.qiagenbioinformatics.com/manuals/clcmainworkbench/current/index.php?manual=Viewing_mode.html

If data was generated using tools provided by a plugin or module, then that plugin or module may need to be installed to view the data. This can be done while working in Viewing Mode also. 

The Viewing Mode is available from CLC Genomics Workbench 11 and CLC Main Workbench 8 onwards. 
 

If a reviewer wishes to do more than just view the data in a CLC Workbench, then evaluation licenses are available. Check out the following related FAQs for information on evaluation versions of the software:

• How can I evaluate the software and how long is the evaluation period?
• Are all features of the software available during an evaluation?
• What happens to my data after the evaluation period if I don't purchase the software?
• How can I evaluate the software on a non-networked machine?