# Downloads The ImageJ FTP site is ftp://codon.nih.gov/pub/image-j/. The README file has installation instructions. See the release notes for a list of the new features and bug fixes. Download ImageJ 0.91 (537K) as a double-clickable Mac application. Requires Mac OS 7.61 or later and MRJ 2.0 or later. Includes source code and CodeWarrior Pro 3 project file. Download ImageJ 0.91 (2.2MB) as a double-clickable Windows application. Includes Sun's JRE 1.1.6 Java runtime environment and Java Performance Pack (JIT compiler), the ImageJ class files and source code. Requires an extraction utility such as WinZip that preserves long file names. Download the ImageJ 0.91 class files and source code (393K). This is the same as the 2.2MB file, but without the JRE folder. It's the file Linux users should download. The Java source consists of 13,538 lines of code in 74 files that compile to 82 class files. A good FTP client, such as Fetch (Mac) or WS-FTP (Windows), will download all these files using a single command. These 16 network downloadable sample images are available in ImageJ's File/Open sub-menu. [ImageJ Home Page]