NCSS, PASS, & GESS Downloads

NCSS, PASS, and GESS
Downloads

Click on the links below to download software, updates, and documentation.

Software - Free Trials
PASS 2008
NCSS 2007
NCSS 2007 and GESS 2006

Software - Current Versions
PASS 2008
NCSS 2007
NCSS 2007 and GESS 2006

Software - Updates
Updates

Software - Previous Versions
Use these links to replace lost or damaged installation CDs from previous NCSS and PASS versions. The most recent versions of the software can be downloaded above.
PASS 2005
PASS 2002
NCSS 2004
NCSS 2001

PDF Files
Brochures
License Agreements
Manuals (Documentation)
Order Forms

Other
NCSS 6.0 Junior
Probability Calculator

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.