What does WOSA stand for?

Window Open Services Architecture (SAUS)

Windows Open Services Architecture - Microsoft Corp.

Windows Open Services/Systems Architecture - Microsoft (MLEX)

Windows Open Systems Architecture - Computer science

Wood Sandpiper - Common English name - American Ornithologists Union four-character bird identification - Scientific name: Tringa Glareola (IBP)

Workers' Organization for Socialist Action - South Africa - Political party (EY)