[BiO BB] need sugesstion

[Usuario Universo Online]

>
> I'm not too sure of this either. AFAIK the fees being charged are quite
> high to justify joining, but then the software and equipment being used
> there costs a lot too. That does not mean that you need all that to
> learn. Open alternatives like `O' and `VMD' exist for us poorer people
> running Debian GNU/Linux. 

> best wishes,
> Indraneel

Can you explain what 'O' and 'VMD' are, briefly?
	Thank you,
		Henry L