Software Downloads

XSQ Software

The XSQ Tools project contains a set of utilities for XSQ file format conversions. Currently, this includes conversion from CSFASTA+QUAL to XSQ, conversion from XSQ to CSFASTA+QUAL, conversion to FASTQ, and splitting an XSQ file by its constituent libraries.

Please note that downloading and using this software indicates acceptance of the EULA terms.


Updates & Patches

 Linux Download XSQ Software (Registration required) Readme  



 PDF Download XSQ Tools User Guide
 PDF Download The Extensible Sequence (XSQ) File Format Specification v1.0.1
 PDF Download The Extensible Sequence (XSQ) Webinar as presented on February 15, 2011
 PDF Download

Third Party Licenses



This file format is being released as "unsupported software" by Applied Biosystems. Please email your FBS for guidance.