pbproxy is a small wrapper to give you a consistent and remotely accessible interface to your system clipboard on linux and mac.
There’s never a situation where I want to copy/paste to any clipboard other than my local clipboard, so I solved this by simply aliasing pbcopy/papaste to always SSH back to my mac and run pbcopy/pbpaste there.
I saw your comment the other day where you talked about maybe putting this on GitHub. Very nice to see that you went ahead and did so :D
With tmux, shell aliases for tmux send-buffer and tmux paste can manually do this without dependencies.
I created a similar tool to help me synchronize my clipboard between my desktop and my laptop: https://github.com/b0o/clipshare
Week of clipboard on HN!