PASS, NCSS, & GESS Free Trial Software

NCSS, PASS, and GESS
7-Day Free Trial Downloads

Use the buttons below to download free 7-day trial copies of PASS 2008, NCSS 2007, and/or GESS 2006.

PASS 2008 7-Day Free Trial
Power Analysis and Sample Size Software

Use the button below to download the most recent release of PASS 2008. In evaluation mode all features are enabled. The software works in trial mode for 7 days. This gives you a chance to give the program a try. In evaluation mode all features are enabled. After the trial period has passed, you can purchase a serial number that will unlock the program, and the trial version will become the professional release of the program. For more information, download a brochure about PASS.

PASS 2008 7-Day Free Trial
File: PASS2008Setup.exe
Size: 34.6 MB
Release Date: January 14, 2008

NCSS 2007 7-Day Free Trial
Statistical Data Analysis and Graphics Software

Use the button below to download the most recent release of NCSS 2007. The software works in trial mode for 7 days. In evaluation mode all features are enabled, except the spreadsheet is limited to 100 rows of data. This gives you a chance to give the program a try. After the trial period has passed, you can purchase a serial number that will unlock the program, and the trial version will become the professional release of the program. For more information, download a brochure about NCSS.

NCSS 2007 7-Day Free Trial*
File: NCSS2007Setup.exe
Size: 72.9 MB
Release Date: April 18, 2008

*You will be able choose whether or not to install GESS 2006 during the setup process.

GESS 2006 7-Day Free Trial (Includes NCSS 2007)
Gene Expression Statistical Software for Microarrays

Use the button below to download the most recent release of GESS 2006 (and NCSS 2007). The software works in trial mode for 7 days. In evaluation mode all features are enabled, except the spreadsheet is limited to 100 rows of data. This gives you a chance to give the program a try. After the trial period has passed, you can purchase a serial number that will unlock the program, and the trial version will become the professional release of the program. For more information, download a brochure about GESS.

GESS 2006 and NCSS 2007 7-Day Free Trial**
File: NCSS2007Setup.exe
Size: 72.9 MB
Release Date: April 18, 2008

**NCSS 2007 must also be installed to use GESS. This setup file allows you to install both.

Click here to order online.
Click here to view the PDF order forms.

PASS 2008 Upgrade Now Available

NCSS 2007 Upgrade with Mixed Models Now Available

GESS 2006 Now Available
Gene Expression Statistical System for Microarrays

Updates for PASS, NCSS, and GESS

What's changed?

System Requirements
Runs under Windows Vista, XP, 2000, NT, ME, 98, 95 compatible Pentium-class computers with at least 32 MB of RAM. Requires 200 MB of hard disk space. Requires Adobe Reader® version 7 or later to use the NCSS, PASS, and GESS Help Systems.

Accuracy
We at NCSS have put a great deal of effort into finding the most accurate algorithms possible. The programs have been tested and verified over and over, both by us and by our customers. Each routine has been verified against textbooks, journal articles, and, where possible, other software. NCSS produces some of the most accurate statistical analysis programs available. NCSS, PASS, & GESS calculate with seventeen-digit, double-precision accuracy.

Guarantee
If you are not completely satisfied with an NCSS product during the first 30 days for any reason, return the program for a full, prompt refund (excluding shipping)--no questions asked.