*[[Prowort]] via using Dobbertin CP/M Plus (partitions D, E, F and G)
*[[X-DDOS|X-DDOS]] (v2.10)
*[[Z3Plus]] and [[NZ-COM]](providing hundreds of additional applications)
*'-HD20BackUp' to backup / compare / restore the complete 20 MB hard disc
*In addition a lot of (cracked) games are able to run from the HD-20 hard disc
== Emulation ==
The Dobbertin HD20 is emulated by the Symbiface III since 7/2023. Therefore you need a subfolder 'HD20' on the SD card containing a USB stick. It needs to contain the 21 MB hard-disc imagefile. It is also [https://www.cpcwiki.eu/forum/emulators/got-bored-again/ emulated in MAME since 6/2015]
== Other harddisc solutions for the CPC ==