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Come analyze HEASARC, IRSA, and MAST data in the cloud! The Fornax Initiative is now welcoming all interested beta users.

Download the HEASOFT Software

Current version 6.37.0 Release Notes

HEASOFT tasks may now be run remotely using SciServer without having to install the software locally. SciServer provides a quick way to use the software (along with access to archival data) and is ideal for users who have limited or infrequent need to run the HEASOFT tasks. More intensive users of HEASOFT are still encouraged to install the software locally for best performance, or consider using HEASoft in a Docker container.

Please note that we no longer offer our traditional pre-compiled binary packages, but continue to support installation from source code distributions or our pre-compiled conda packages. The Conda packages (starting with HEASoft version 6.35), are available from a custom channel hosted by the HEASARC and are built from the same source code available below.

Download the source code:

You may download the complete HEASoft source code (all mission & general-use software) (928 Mb / 1.6 Gb unpacked) or use the interface below to select only the parts of HEASoft you require.

Please click SUBMIT only once, and be patient while a tar file containing your selections is assembled and retrieved.

Install the software:

  • Visit the known issues page for notifications about any problems (and relevant patches) identified after HEAsoft 6.37 was released.

  • Un-gzip and un-tar the file heasoft-6.37src.tar.gz in a clean directory and follow the instructions in our installation guides for the following platforms:


  • See our recommendations for batch processing and good scripting practices when writing your own scripts to run HEASoft tasks.

  • Optional: download and run the hwrap script to create an alternate runtime environment for HEASOFT to help avoid conflicts with other software packages (e.g. XMM-SAS or CIAO).