Is there any command like lsmod (in Linux) which enables us to see all the active modules loaded under QNX?
mh, there are no modules in QNX.
Every “module” in Linux is a process in QNX.
For example io-net would be your networking module with the driver mounted.
There is no kernel like in Linux since QNX is a microkernel architecture.
There is a good chapter about in the documentation.