There is cpu for plan9. It's a remoteshell does does mount the local filesystem, so you can continue to work.
I don't think tinyssh is less complex, as it is compatible.
Re:Plan 9 from Bell Labs
by edwintorok on Tuesday December 09, 2014 @08:07AM
(#8722465)
According to that mailing list message cpu uses 9P+ssl, and I consider ssl more complex than ssh.
May not be the case on Plan9 as it looks like their ssl only supports old algorithms and not too many of them.
Maybe tinyssh could qualify as an alternative...