sessionmatic.vim is a really simple script that takes care of your sessions for you:

1. When you run Vim from a directory where there is a readable Session.vim file sessonmatic.vim will source it.
2. When you close Vim and there is a writtable Session.vim file in the working directory sessionmatic.vim will save it.

You must create your desired sessions using the standard :mksession command. You must also set your preferred sessionoptions.

License

CC0