AnchorDockingDsgn and EasyDockMgrDsgn are included with Lazarus, you simply need to install those from the package list. A word of warning though, AnchorDockingDesign doesn't work right in the stable (0.9.30.2) version (for me it crashes the IDE both on linux and windows); if you're using the trunk version, it works fine and I like it better then EasyDockMgrDesign, so yo might give it a try. If using the stable version, better to stick to AnchorDockingDsgn I think.
If you wish to install the CodeTyphon edition, you got the link above; you get Lazarus and several additional components in one package.