The following table presents an availability and compatibility matrix of Silverlight versions for varIoUs operating systems and web browsers.
| OS/browser | Internet Explorer 6 SP1 or later | Internet Explorer 7 | Internet Explorer 8 or later | Mozilla Firefox 3 or later | SeaMonkey | Safari | Opera | Google Chrome | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Windows 7 | N/A | N/A | 1,2,3,4 | NPAPI | Unofficially[17][18] | 2,4 | |||||||
| Windows Server 2008 R2 | No | Unofficially[17][18] | Windows Vista Windows Server 2008 | Unofficially[17][18] | Windows XP Windows Server 2003 Windows Home Server | 2 Unofficially | Unofficially[17][18] | Windows 2000 (KB891861 required) | N/A | Unofficially[19] | 2; via NPAPI | Planned[17] | N/A |
| Mac OS 10.4/10.5 PowerPC | 1 | 1 | Planned [17] | N/A | |||||||||
| Mac OS 10.4/10.5 Intel | Planned [17] | 3,4 Unofficially |