The Akamai Download Manager provides for effective, efficient file downloads, especially for large files. It also lets you pause and resume downloads, and it automatically starts to install your product when the download is complete.
On Windows, Akamai downloads an executable (.EXE) file. For some especially large Windows products, Akamai also downloads a .7z file. It's necessary that both the .EXE and the .7z files are downloaded and in the same folder for the product to install successfully.
On Mac OS, Akamai downloads a single .DMG file.