Krusty, Cloudstrife and PulkoMandy started a new project which is called CPC-DSK. Its intention is to bring all the development tools for Linux cross-development together in one SDK and hopefully speed up the development of new demos and games. You will find image viewers, image converter, tools for writing floppy disks, a port of Ramlaids CPC Tools and an upgraded version of the Caprice emulator in the SDK.

You can find the CPC-SDK on its project page at Google Code.