DirectX9 - For More Than Just Gamers?
Xev writes "HEXUS.net are showing a review of a new product called 3DEdit. This uses the DirectX 9 3D rendering engine; 3D transitions; DirectX 9 Shader-based filters, in order to give you a powerful home DV editing suite. This proves a lot more value to me as a Video editor than a card which just lets me play the latest games. Perhaps there is more use for these cards even at a consumer level?"
OpenGL is only a graphics library. Its comparison is Direct3D. For the rest of DirectX, there's SDL, although I have no idea how they compare.
As for networking, I don't know of any decent games that don't suffer from bad netcode that use DirectX for the networking layer.