*[https://www.cpc-power.com/index.php?page=detail&num=17932 Amstrad Diagnostics v1.3a] Test RAM, ROM, keyboard and detect CRTC
*[http://www.winape.net/downloads.jsp Plus Test] [https://www.cpc-power.com/index.php?page=detail&num=15242] CPC and CPC+ Emulator test suite (including Instruction and Interrupt timing tests)
*[https://cpcrulez.fr/book-amstrad_cpc_crtc_compendium.htm Amstrad CPC CRTC Compendium v1.6] Ultra accurate CRTC documentation*[https://web.archive.org/web/20230330143252/http://logonsystem.fr/html/downloadlogon.htm Shaker v2.4] [https://cpcrulez.fr/applications_util-cpc_shaker.htm] Testing tool for the Amstrad CPC Ultra accurate CRTC Compendiumdocumentation and testing tool
*[https://www.cpc-power.com/index.php?page=detail&num=10401 Test CRTC v3.0] Identify CRTC type
*[https://www.planetemu.net/rom/amstrad-cpc-applications-dsk/crtc-editor-v5-1-1994-brain-of-chaos CRTC editor v5.1]