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

 LinuxDownloadXSQ Software (Registration required)  



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

Third Party Licenses



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