Current version
Version 3.3 posted March 2004

Manual as a PDF file
Manual as a web page
Install files for Linux (.tar.gz format)
Install files for Windows NT/2000/XP (ZIP format)
Source code (.tar.gz format)

Macintosh OSX
Install files for MUSCLE 3.2 on Mac OSX (.tar.gz format)

I don't have easy access to a Mac, so the OSX version tends to lag behind. Mac users: I recommend you download the latest source code and re-build -- please let me know if anything needs tweaking to build correctly.

Download issues
Some browsers open the PDF file and the Web page manuals instead of starting a download. If this happens to you, try right-clicking on the link and choosing an option named "Save Target As..." or similar.

The Linux install and source code downloads are named *.tar.gz. Some browsers decompress (gunzip) such files but fail to remove the .gz extension on the file name. If you have trouble with gunzip, try renaming the file to *.tar.

Obsolete versions
MUSCLE version 3.2
MUSCLE version 2.01 
MUSCLE version 3.0
MUSCLE version 2.1
MUSCLE version 2.01 

The PREFAB database is also available for download.