Complex sentence: It was jointly developed by Microsoft and 3Com Corporation, and is mostly used in Microsoft Windows, but the open-source "NDISwrapper" and "Project Evil" driver wrapper projects allow many NDIS-compliant NICs to be used with Linux, FreeBSD and NetBSD.
Split into simpler sentences: It was jointly developed by Microsoft and 3Com Corporation and is mostly used in Microsoft Windows. However, the open-source "NDISwrapper" and "Project Evil" driver wrapper projects allow many NDIS-compliant NICs to be used with Linux, FreeBSD and NetBSD.