Apps like UDP/TCP Widget

Here are some great alternatives to UDP/TCP Widget by K.J.M. :
UDP TCP Server
UDP TCP Server
★3.9
TCP UDP Server & Client
TCP UDP Server & Client
★4.5
UDP Sender / Receiver
UDP Sender / Receiver
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Knock on Ports
Knock on Ports
★4.6
NetPal - netcat for Android
NetPal - netcat for Android
★4.3
Packet Injection
Packet Injection
★3.8
UDP Terminal
UDP Terminal
★3.9
WiFi Controller ESP8266
WiFi Controller ESP8266
★3.8
RoboRemo - Control your Robot
RoboRemo - Control your Robot
★4.7
Network Utilities
Network Utilities
★4.6
Simple TCP Socket Tester
Simple TCP Socket Tester
★4.8
Ping: test high latency, delay
Ping: test high latency, delay
★4.1
TCP Telnet Terminal
TCP Telnet Terminal
★4.3
TeslaModbusSCADA
TeslaModbusSCADA
★4.4
TCP Ports list
TCP Ports list
★4.6
Net Tools
Net Tools
★3.4