* [http://www.cpcwiki.eu/forum/amstrad-cpc-hardware/cpc-sid/ Bryce's CPCSID interface]. Bryce never actually built the CPCSID, it only made it as far as a design concept on paper. [https://www.cpcwiki.eu/forum/amstrad-cpc-hardware/new-amstrad-cpc-sound-board-(aka-sonique-sound-board)-sid-part-(wip)/msg114468/#msg114468 Source]
* [http://www.cpcwiki.eu/forum/amstrad-cpc-hardware/new-amstrad-cpc-sound-board-%28aka-sonique-sound-board%29-sid-part-%28wip%29/ DaDMaN's Sonique Sound Board], based on the SwinSID SID clone. You can hear how DaDMaN's interface sounds here: [https://soundcloud.com/david-donaire-s-nchez/sets/amstrad-cpc-sonique-sound/ Playlist on SoundCloud]
* [https://github.com/lambdamikel/Speak-SID LambdaMikel's Speak&SID]
* [[RSF3|TMTLogic's RSF3]]