Acrobat Reader 4.05 (english universal) :
- Mac OS 8,9 Macintosh (Mac Binary) 5.8MB
- Windows 95, 98 and NT4 (.exe) 6.5MB

Adobe Reader 6.0.2 English (Basic version) :
- 6.0.1 Windows 95, 98, NT4, Me and XP (.exe) 15.9MB wich must be updated to 6.0.2
- Mac OSX 10.x.x (.dmg) 20.5MB

Web Browser PDF plugin for Mac OS X :
- PDF Browser Plugin 2.2.3 - free for private and non-profit uses
(infos) <250kB
-> Included with Adobe Reader 7.0.8
- Safari 2 (MacOSX 10.4.x aka Tiger) provides Inline PDF Viewing
View PDF documents directly in the Safari browser window — no other application required.

Acrobat Reader 5.0.9 (English with Search) :
- IBM AIX, 18.0MB
- Sun Solaris SPARC, 9.5MB
- HP-UX, 14.2MB
- Linux, 8.9MB

Other languages and versions of Adobe Reader (was Acrobat Reader) :
- Chooser
- Understand wich version of Adobe Reader/Acrobat Reader is for wich OS