SkyOS is closed source and costs money (you preorder the final OS and get to access all the beta versions for free).
It has no support for any WiFi hardware (lack of device driver)
It has no 3D acceleration support for any video card on the market.
Whilst it has some POSIX compliance, it is not always trivial to port Linux or *BSD software. There is no port of OpenOffice, for instance.
Some or most of the binaries in current beta builds still contain debug symbols, causing bloat and speed issues.
Monolithic kernel.
Some of the very worst PR activity ever expressed in an online forum.
I've had a read through the API documentation. Whilst being quite feature-rich, it really is a badly designed API that is non-extendible without breaking things.
BeOS was the only x86 OS that showed any kind of elegance.
Woe is us :(
It has no support for any WiFi hardware (lack of device driver)
It has no 3D acceleration support for any video card on the market.
Whilst it has some POSIX compliance, it is not always trivial to port Linux or *BSD software. There is no port of OpenOffice, for instance.
Some or most of the binaries in current beta builds still contain debug symbols, causing bloat and speed issues.
Monolithic kernel.
Some of the very worst PR activity ever expressed in an online forum.
I've had a read through the API documentation. Whilst being quite feature-rich, it really is a badly designed API that is non-extendible without breaking things.
BeOS was the only x86 OS that showed any kind of elegance.
Woe is us :(