In each Service Pack we can find:
- All the revisions to the product until then.
- All the new features that have been developed for it.
- System management tools, controllers, additional components,...
Windows 2000 SP3 is the third pack of updates for Windows 2000, that as well as including a great numbers of bug fixes and some new features, includes Windows Installer 2.0.
If you use Windows 2000 and you still haven't updated Windows 2000 SP2, you should download Windows 2000 SP3 for free to fix any security vulnerabilities that the operating system may have.