I'm working under the constraints of a shared hosting service that doesn't offer SSH or SVN. I can get around the lack of SSH, albeit at some inconvenience, but for putting out fires, there's no substitute I know of for SVN. There are a number of binaries for different flavors of Linux, but none for GNU/Linux, unless one of the others is compatible. There is a cpp compiler, but the last time I tried to create my own local Apache, MySQL, and PHP instances, I had to edit the makefiles to fix errors, so I'd rather skip that if I can, especially if I have to work through a backdoor script!
What can you suggest?