*[https://www.cpc-power.com/index.php?page=detail&num=9627 Official Amstrad Plus diagnostics cartridge]
*[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 CRTC Compendium
*[https://www.planetemu.net/rom/amstrad-cpc-applications-dsk/crtc-editor-v5-1-1994-brain-of-chaos CRTC editor v5.1]
*[https://www.cpc-power.com/index.php?page=detail&num=18998 4096k Tester] Amstrad Plus palette tester
*[https://www.cpc-power.com/index.php?page=detail&num=6987 RAM Expansion Test] [https://www.cpc-power.com/index.php?page=detail&num=14833 MemTest]RAM testers
*[https://www.cpc-power.com/index.php?page=detail&num=15518 DskTest v0.1.47b]
*[https://www.cpc-power.com/index.php?page=detail&num=15144 Dlfrsilver Dump Tool Test Suite v1805]