Links

ACPC.ME Amstrad CPC Memory Engraved - Huge collection of documents, manuals, literature, magazines, marketing material and much more
CPC-Power collection of most of the software that was ever released. Also includes ROMs and patched versions for programs with bugs.
CPC Rulez (FR) A great french site, updated frequently, with games, reviews, utilities, type-ins, demos, hardware info. A treasure and a must-visit - french pages can easily be translated with Google translate or similar tools).
CPC Game Reviews - CPC Game Reviews is a website which, as its name suggests, contains reviews of games for the Amstrad CPC computer - hundreds of them, in fact. It also contains a collection of advertisements which have been scanned from Amstrad CPC magazines.
BZH Games Collection of Amstrad games - can be played in the browser including ongoing highscore competition

(probably) Outdated / abandoned

CPCRulez forum The most active French forum
AmstradPlus Forum Forever French forum
Amigos y Usuarios Amstrad (ES) News website that has lessons on software development and hardware restoration. It also has a forum, and reviews on software and hardware.
Amstrad (ES) All about the Spanish software for CPC. RUA Magazine link.
CPCWiki.de German forum
Classic-Computing.de German board
Amstrad Zone

Facebook Groups

Memory Full All about the CPC demoscene
Les Sucres en morceaux all the news relating to the productions of "Les Sucres en Morceaux" and many articles relating to the Amstrad CPC.
ESPsoft (ES) Blog on Spanish homebrews for the CPC.
TheMojonTwins (ES) Homebrew developer group that focuses on creating games for retro systems, among which is the CPC.
4MHz (ES) Homebrew developer group that focuses on creating games for retro systems that use the Z80 CPU.
NoRecess/Condense Homepage of an Amstrad CPC demoscene group.
Prodatron's page (Prodatrons homepage includes info and downloads of his productions as well as a lot of downloads for CPC Digitracker modules (MDL), OCP Art Studio pictures and Scene demos)
Arkos Demogroup - The page of Arkos, with some great demos, diskmags, games and tools.
FutureOS homepage - Official homepage of the operating system FutureOS for the CPC6128 and CPCPlus.
SymbOS
CPC Mania - some tools like CPR tools, CPCDiskXP, CPCTapeXP - plus some technical informations
bread80.com - some analysis of Firmware and BASIC logic (and also the video subsystem- hardware)
Domes-DOS Schneider/Amstrad CPC dedication - Domes-DOS's CPC website in the design of an GT65 green monitor (with download of his DART-logging tool and lots of infos about the CPC series)

G.o.St.-SOFT's CPC-Hardwareführer at 8-Bit-Nirvana (German) - lots of tips and tricks, but no recent updates
8bit Projects for Everyone - Hardware updates for 8-bit computers, also for CPC.
Amstrad Today (FR) - Many Tips for Amstrad CPC

Noels Retro Lab - lots of hardware related videos, especially repairs
Xyphoe - Gaming - almost every week a several hour long live stream
Novabug - many CPC games
John Gage - lots of game reviews but a lot of swearing and sound driven heavily into saturation

IRC-channel #cpc on irc.freenode.net (a big IRC-network), one cpc-channel among many others out there on various networks.
IRC-channel #cpc-fr on irc.freenode.net, french scene channel (replacing #cpc on Neoxys and #cpc on Europnet)
IRC-channel #phenixinformatique on proxy.epiknet.org, french channel.
Flash-chat Browser chat in Flash.
Praline Discord server

The Snake Becomes the Key is a very nicely-written blog with reviews and thoughts on various CPC games. Very well done but not updated any more.
Genesis 8 - Genesis 8 is a spartan, but often-updated Amstrad-related news site.
CPCCRACKERS - French site about crackers for the CPC.
Octoate.de - English site which features news, some articles and meeting pictures.
Programming Turbo Pascal on a CPC! - A collection of Turbo Pascal programs with some CPC Specific programs.
Oldschool gaming - Games reviews of recent games for the CPC!
GX4000.co.uk, a new site devoted to the hardware and software of the oft-neglected games console.
Roland Radio CPC Amstrad chiptune streaming 24/7
Bitstream Podcast on chiptune and the demoscene. Includes CPC Amstrad
Cepeceros (ES) Podcast

Amstrad.eu (FR) Mostly dead. Previously known as phenixinformatique.com
CePeCe (ES) Spanish CPC portal and web-hosting facilities for your CPC webpage.
Amstradeus (FR) Lots of interviews, manuals for download and much more.
The CPC Demoscene Optimus website about the CPC demoscene with a list of some of the best CPC demos with reviews and screenshots.
CPC Zone Home of the Gamebase, the ultimate collection of information (with screenshots, cover scans, reviews etc) on all games CPC. Also home of the Zone Forum.
CPC Hardware (FR) Forum, nice downloads, hardware projects; also an online store for hardware stuff like RS232 interfaces etc.
CPC Zone Forum (FR) One of the most popular and active forum on the net.
CPC-Forum (DE) The new most important discussion forum for the German-speaking part of the CPC scene.
CPC 6128 Europe European portal
CPC Oxygen Home of the same-name great fanzine and AA scan repository. Not updated in a long time.
Various Amstrad stuff Including instructions on how to fit or connect a 3.5" drive, hot to connect your CPC to your PC and how to transfer files, among others.
Push'n'Pop Amstrad Demoscene.
CPC Scene - Various stuff. Of much interest: The CPC online radio station!
The Kilobyes Podcast Home of the Kilobytes Podcast. Dedicated to playing chip tunes and covering the retro computing scene in general
CPC scene map
Grimware is a really nice site with hardware info and hacks for the CPC machines... give it a try!

CPCWiki - THE Amstrad CPC encyclopedia!