Core Tunnel is the best way to manage your SSH tunnels, with OS X Keychain integration. You can manage multiple tunnels in parallel, supports password/keyboard/pubkey authentication methods, creates local/remote/dynamic port forwarding tunnels & more.
TinyCP is web based software for managing linux like systems. It does not ruin your system and is extremely lightweight for hardware. Supports the management of Domains, Mailboxes, Databases, FTP, Samba, Firewall, VPN, GIT, SVN etc.