Droidware UK
File transfers using:
FTP
FTPS (Implicit and Explicit FTP over SSL).
SFTP (FTP over SSH). Login with password or RSA/DSA OpenSSL (Traditional SSLeay PEM) or ConnectBot (PKCS#8 PEM) private key.
multiple file and directory transfers
resume transfers support
clean and simple UI
For more options use system menu, or long touch for file context menu.
Developer: support@droidwareuk.com
Available in Google Play Store for Android