The operating system can be described as a set of software responsible for managing a computer's hardware. The most common are Windows and Mac OS.

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Product Price User rating Rank Type of license Language CPU support
Microsoft Windows 7 Home Premium Eng (64-bit OEM)$135.00 557/101 OEMEnglish64-bit 
Microsoft Windows 8 Eng (64-bit OEM)$135.70 584/102 OEMEnglish64-bit 
Microsoft Windows 7 Professional Eng (64-bit OEM)$193.98 478/103 OEMEnglish64-bit 
Microsoft Windows 7 Home Premium Eng (32-bit OEM)$139.93 38 4 OEMEnglish32-bit 
Microsoft Windows 8 Professional Eng (Upgrade)$98.67 375/105 UpgradeEnglish32/64-bit 
Microsoft Windows 8 Professional Eng (64-bit OEM)$196.13 534/106 OEMEnglish64-bit 
Microsoft Windows 8 Professional Eng (Upgrade fr Standard)$104.55 33 7 UpgradeEnglish32/64-bit 
Microsoft Windows 7 Home Premium SP1 Eng (32-bit OEM)$139.00 32 8 OEMEnglish32-bit 
Microsoft Windows 8 Eng (32-bit OEM)$125.35 49 9 OEMEnglish32-bit 
Microsoft Windows 7 Professional Eng (32-bit OEM)$193.99 407/1010 OEMEnglish32-bit 
Microsoft Windows Home Server 2011 Eng (64-bit OEM)$17.26 336/1011 OEMEnglish64-bit 
Microsoft Windows 7 Ultimate SP1 Eng (64-bit OEM)$274.85 26 12 OEMEnglish64-bit 
Microsoft Windows 7 Home Premium SP1 Eng (64-bit OEM)$137.06 35 13 OEMEnglish64-bit 
Microsoft Windows Server 2012 Essentials Eng (OEM)$563.50 13 14 OEMEnglish64-bit 
Microsoft Windows 7 Professional Eng (Upgrade fr Home Premium)* $212.18 15 15 UpgradeEnglish32/64-bit 
Microsoft Windows 7 Ultimate Eng (64-bit OEM)$285.00 247/1016 OEMEnglish64-bit 
Microsoft Windows 8 Professional Eng (32-bit OEM)$189.74 47 17 OEMEnglish32-bit 
Microsoft Windows 7 Professional SP1 Eng (64-bit OEM)$200.10 33 18 OEMEnglish64-bit 
Microsoft Windows Server 2012 Essentials Eng$1,021.20  12 19 RetailEnglish64-bit 
Microsoft Windows Server 2012 1 Device CAL Eng (OEM)$45.92 12 20 OEMEnglish 
Microsoft Windows Server 2008 Standard R2 SP1 Eng (64-bit OEM)$1,081.00 20 21 OEMEnglish64-bit 
Microsoft Windows Server 2012 Standard 2 CPU Eng (OEM)$1,054.04 14 22 OEMEnglish64-bit 
Microsoft Windows 8 Eng (Upgrade)$189.54 14 23 UpgradeEnglish32/64-bit 
Microsoft Windows 7 Home Premium Eng (Upgrade)$205.00  10 24 UpgradeEnglish32/64-bit 
Microsoft Windows SBS 2011 Premium 1 User CAL Eng (OEM)$108.46 18 25 OEMEnglish64-bit 
Microsoft Windows SBS 2011 Standard 5 User CALs Eng (OEM)$402.73 22 26 OEMEnglish64-bit 
Microsoft Windows Web Server 2008 R2 x64 SP1 Eng (OEM)$622.43  12 27 OEMEnglish64-bit 
Microsoft Windows Server 2008 1 User CAL Eng (OEM)$49.54 17 28 OEMEnglish 
Microsoft Windows SBS 2011 Standard Eng (OEM)$1,212.08 23 29 OEMEnglish64-bit 
Microsoft Windows Server 2012 1 User CAL Eng (OEM)$45.92 11 30 OEMEnglish 
Microsoft Windows 7 Ultimate Eng (32-bit OEM)$294.00 16 31 OEMEnglish32-bit 
Microsoft Windows Server 2008 R2 Enterprise SP1 Eng (64-bit OEM)$3,759.26  11 32 OEMEnglish64-bit 
Microsoft Windows Server 2008 5 Device CALs Eng (OEM)$215.80 15 33 OEMEnglish 
Microsoft Windows 7 Professional Eng (Upgrade)$388.70 14 34 UpgradeEnglish32/64-bit 
Microsoft Windows 7 Ultimate Eng$505.70 126/1035 RetailEnglish32/64-bit81
Microsoft Windows SBS 2011 Essentials Eng (OEM)$642.85 18 36 OEMEnglish64-bit 
Microsoft Windows Server 2008 5 User CALs Eng (OEM)$215.77 20 37 OEMEnglish 
Microsoft Windows Server 2008 1 Device CAL Eng (OEM)$49.54 18 38 OEMEnglish 
Microsoft Windows 7 Ultimate Eng (Upgrade)$443.23 97/1039 UpgradeEnglish32/64-bit 
Microsoft Windows SBS 2011 Standard 20 User CALs Eng$2,711.70  11 40 RetailEnglish 
Microsoft Windows Server 2012 Standard 5 CALs Eng$2,211.00 13 41 RetailEnglish64-bit 
Microsoft Windows Server 2012 Standard 2 Add. CPU Eng (OEM)$1,043.72 14 42 OEMEnglish64-bit 
Microsoft Windows 7 Professional SP1 Eng (32-bit OEM)$197.80 33 43 OEMEnglish32-bit 
Microsoft Windows 7 Ultimate SP1 Eng (32-bit OEM)* $284.59 17 44 OEMEnglish32-bit 
Microsoft Windows Server 2012 20 User CALs Eng$1,572.05  10 45 English 
Microsoft Windows Server 2012 Standard 10 CALs Eng$2,587.50  11 46 RetailEnglish64-bit 
Microsoft Windows 7 Home Premium Eng$333.04  12 47 RetailEnglish32/64-bit82
Microsoft Windows Server 2012 Datacenter 2 Add. CPU Eng (OEM)$5,515.83 10 48 OEMEnglish64-bit 
Microsoft Windows SBS 2011 Premium Eng (OEM)$1,829.76 19 49 OEMEnglish64-bit 
Microsoft Windows Server 2012 5 Device CALs Eng$341.55  10 50 English 
Microsoft Windows 7 Professional Eng$470.00 128/1051 RetailEnglish32/64-bit 
Microsoft Windows SBS 2011 Essentials Eng$1,092.13 5 52 English64-bit 
Microsoft Windows SBS 2011 Standard 1 Device CAL Eng (OEM)$87.66 19 53 OEMEnglish64-bit 
Microsoft Windows SBS 2011 Standard 1 User CAL Eng (OEM)$87.69 22 54 OEMEnglish64-bit 
Microsoft Windows Server 2012 20 Device CALs Eng$1,367.35  11 55 English 
Microsoft Windows SBS 2011 Standard Eng$2,052.75 12 56 RetailEnglish64-bit 
Microsoft Windows SBS 2011 Standard 5 User CALs Eng$678.50  14 57 RetailEnglish 
Microsoft Windows Server 2012 5 User CALs Eng (OEM)$201.50 16 58 OEMEnglish 
Microsoft Windows Server 2012 Datacenter 2 CPU Eng (OEM)$5,565.66  9 59 OEMEnglish64-bit 
Microsoft Windows Server 2012 5 Device CALs Eng (OEM)$201.50 14 60 OEMEnglish 
Microsoft Windows SBS 2008 Premium 5 User CALs Eng (OEM)$603.43 3 61 OEMEnglish 
Microsoft Windows 7 Home Premium Eng (Upgrade fr Starter)$149.01 2 62 UpgradeEnglish32/64-bit 
Microsoft Windows SBS 2011 Standard 5 Device CALs Eng (OEM)$400.00 21 63 OEMEnglish64-bit 
Microsoft Windows 7 Ultimate Eng (Upgrade fr Home Premium)* $238.00  3 64 UpgradeEnglish32/64-bit 
Microsoft Windows SBS 2011 Premium 5 User CALs Eng (OEM)$510.69 19 65 OEMEnglish64-bit 
Microsoft Windows SBS 2011 Premium 1 Device CAL Eng (OEM)$108.46  12 66 OEMEnglish64-bit 
Microsoft Windows Web Server 2008 R2 x64 Eng$1,088.17 1 67 RetailEnglish64-bit 
Microsoft Windows SBS 2011 Premium 5 Device CALs Eng (OEM)$510.69  12 68 OEMEnglish64-bit 
Microsoft Windows SBS 2011 Standard 20 Device CALs Eng$2,711.70  11 69 RetailEnglish 
Microsoft Windows SBS 2011 Standard 5 Device CALs Eng$678.50  11 70 RetailEnglish 
Microsoft Windows Vista Ultimate Eng (32-bit OEM)$171.35  3 71 OEMEnglish32-bit 
Microsoft Windows Vista Home Premium SP1 Eng (32-bit OEM)$171.35  3 72 OEMEnglish32-bit 
Microsoft Windows XP Professional Eng (OEM)$349.00  1 73 OEMEnglish32-bit 
Microsoft Windows Vista Home Premium Eng (32-bit OEM)$159.85  2 74 OEMEnglish32-bit1
Microsoft Windows Vista Business Eng (32-bit OEM)$309.35  1 75 OEMEnglish32-bit 
Microsoft Windows Server 2003 5 User CALs Eng (OEM)$431.66 1 76 OEMEnglish 
Microsoft Windows Server 2003 5 Device CALs Eng (OEM)$472.14 1 77 OEMEnglish 
Microsoft Windows XP Professional x64 SP2c Eng (OEM)$498.77 1 78 OEMEnglish64-bit 
Microsoft Windows Vista Home Basic Eng (32-bit OEM)$194.35  1 79 OEMEnglish32-bit 
Microsoft Windows Vista Home Premium Eng (64-bit OEM)$286.35  15/1080 OEMEnglish64-bit1
Microsoft Windows Server 2012 5 User CALs Eng$393.30  10 81 English 
Microsoft Windows Vista Business SP1 Eng (32-bit OEM)$217.35  1 82 OEMEnglish32-bit 
Microsoft Windows Vista Business Eng (64-bit OEM)$217.35  16/1083 OEMEnglish64-bit 
Microsoft Windows Vista Ultimate Eng (64-bit OEM)$309.35  15/1084 OEMEnglish64-bit 
Microsoft Windows Server 2003 Standard x64 Eng (OEM)$1,615.11  1 85 OEMEnglish64-bit 
Microsoft Windows SBS 2003 R2 Standard SP2 Eng (OEM)$1,052.89  1 86 OEMEnglish32-bit1
Microsoft Windows Server 2008 Standard Eng (OEM)$1,584.45  1 87 OEMEnglish32/64-bit 
Microsoft Windows Home Server Eng (OEM)$255.55  19/1088 OEMEnglish32-bit83
Microsoft Windows Vista Home Premium SP1 Eng (64-bit OEM)$194.14  1 89 OEMEnglish64-bit 
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