There are severall HP/H3C simulators but none are publicly available.
Except for the simulator Klam is refering to.
@Klam, could you explain more about this HP/H3C simulator called CEN/LITO. By telling us how it works, what we can do with it, how we can obtain it, and how we can link it to GNS3.
Further more HP has released its Virtual Services Router, VRS, which is an HP (H3C) router running as a VM.
This looks great but unfortunately doesn't run on virtualbox, the VSR runs the Comware OS which in turn runs on a linux kernel which goes into a kernel panic while booting. Therefore setting up a network in gns3 is impossible.
The only option is to use a cloud to link it to VMware fusion/workstation which does support the VSR.
Unless GNS3 0.N or GNS3 1.N would support VMware fusion/workstation like it supports virtualbox and QEMU.
Right now that would be a dream come true.
HP VSR: https://h10145.www1.hp.com/Downloads/ProductsList.aspx?lang=en&cc=us&prodSeriesId=5443163
P.S. the only simulator that looks like GNS3 and has Comware like devices is eNSP from huawei but its not the same.