Fall 2009 has seen many OS releases. All 3 major platforms had an OS release in the last 3 months. I’ll give you some general information on each of them.
Mac OSX 10.6 (Snow Leopard) was released to the general public on August 29. It is available as an upgrade for Leopard users using an Intel-based Mac since PowerPC is no longer supported. Some of the programs such as QuickTime and Safari have received updates but the major change is with the OS itself. Boot speed has been increased and Finder and many of the applications have been rewritten in 64 bit code. Many Macs will be using the new 64-bit Mac kernel.
Cost: $29.99 (upgrade for Leopard users)
System Requirements: Intel processor, 1 GB RAM, 5 GB hard drive space, DVD drive
Microsoft Windows 7, which many people consider to be the best Windows OS since XP, was released on October 22. It expected to sell very well and make up for Vista’s lack of acceptance. It is built on the same Windows core version as Vista (NT 6.x) is, but feature wise it is quite different. One of the major changes you would notice first would be the updated Taskbar which had basically been the same since Windows 95. It has been almost completely redone. It is now much more like the Dock on the Mac OSX. Two other major feature include Libraries and XP Mode. Libraries let you group folders, and view them through one folder interface. XP Mode is a Virtual Machine setup that gives the user almost full backwards compatibility with Windows XP, if a XP program does not work in Windows 7 just install it in the XP VM and the program will appear in your Start Menu just like any Win7 program. It even works for devices like printers too. Some of this may be a tad difficult to understand, but the best way is to try Windows 7 and see it for yourself.
Cost: $199.99 (Full version), $119.99 (HomePremium upgrade for XP & Vista users)
System Requirements: 1 GHz processor, 1 GB RAM, 16 GB hard drive space, DirectX 9 & WDDM 1.0 compatible graphics card
Ubuntu Linux 9.10 (Karmic Koala) was released on October 27, only 5 days after Windows 7. Ubuntu is the most popular Linux Distribution, with about one-third of all Linux users using it. Karmic Koala is the latest update for Ubuntu users. New features in Karmic include: improvements in Cloud computing, Ext4 as the default file system, better performance on Intel graphics cards and new software management. Software management is probably the biggest change. The old Add/Remove programs application has been replaced by the Ubuntu Software Center. In the next version of Ubuntu the Software Center is planned to also replace the functions of Synaptic & Update manager.
Cost: Free, both Full version or upgrade for 9.04 users
System Requirements: 700 Mhz processor, 384 MB RAM, 5 GB hard drive space