I'm currently going back to Vim from Spacemacs. Is there a plugin that offers a similar way to search / open files? In Spacemacs you can easily navigate the file system after pressing SPC-f-f.
You can see an example here. I really like how it shows a list of the files and directories under the current directory.
If you can live without as-you-type fuzzy-completion, the built-in :help 'wildmenu' works beautifully.
If you absolutely need as-you-type fuzzy-completion there are many plugins to choose from: