I have decided to rewrite this FAL driver for TYPO3 v7.6 LTS, because it has some issues with FAL filter and performance.The new driver can be found at github: https://github.com/vertexvaar/fal_sftp and packagist: https://packagist.org/packages/vertexvaar/falsftp
The new version (1.0.0) is not completed, yet, but it reimplements all functionalities of the old one, that's why it was released already.
- better backend UI (required patch: https://review.typo3.org/#/c/44719/ will be released with 7.6.1)
- performance optimization
- option to choose between PHP SSH extension and phpseclib (pure PHP SSH implementation) as SSH adapter
- compatibility for 7.6.1 and higher
- better code ;)