Apps like Port Forwarder

Here are some great alternatives to Port Forwarder by Gorilla Software LLP :
Tun2Socks
Tun2Socks
★4.3
DNS forwarder
DNS forwarder
★4.1
Mini Upnp
Mini Upnp
★3.8
TFTP CS
TFTP CS
★4.0
Easy DNS (NO/ROOT)
Easy DNS (NO/ROOT)
★4.1
SSH Server
SSH Server
★4.6
Call Forwarding App
Call Forwarding App
★3.5
VPN Proxy Server:Tether NoRoot
VPN Proxy Server:Tether NoRoot
★4.0
RedMobile
RedMobile
★4.2
RaspiCam Remote
RaspiCam Remote
★3.7
2048
2048
★4.5
HTTP Toolkit
HTTP Toolkit
★4.6
RealVNC Viewer: Remote Desktop
RealVNC Viewer: Remote Desktop
★4.1
Android Proxy Server Pro
Android Proxy Server Pro
★4.6
Android Proxy Server
Android Proxy Server
★4.6
Remote ADB Shell
Remote ADB Shell
★3.9