Where is the right place to contribute modifications and plug-ins for CKEditor, and set them up for review and discussion? Is there such a place already?
I am currently developing a number of plugins and tweaks, many of which I'm happy to share if anybody's interested.
Is there a central user contributed stuff repository, or is it shattered all over the internet?
I am currently developing a number of plugins and tweaks, many of which I'm happy to share if anybody's interested.
Is there a central user contributed stuff repository, or is it shattered all over the internet?

Re: Where to contribute?
Re: Where to contribute?
Documentation Manager, CKSource
See CKEditor 5 docs, CKEditor 4 docs, CKEditor 3 docs, CKFinder 3 docs, CKFinder 2 docs for help.
Visit the new CKEditor SDK for samples showcasing editor features to try out and download!