Forgot to mention Materials Studio..... An extremely easy-to-use software but comes at a hefty license fee. On Oct 24, 2017 5:57 PM, Raman Preet Singh <ramanpreetsingh at hotmail.com<mailto:ramanpreetsingh at hotmail.com>> wrote: I was looking for DPD in Gromacs too but in vain. You may try DPDmacs, POLY DL or LAMPPS.