added TinyGSM and PicoTCP

README.md

@@ -24,6 +24,7 @@ Under construct
 * [LwESP](https://github.com/MaJerle/lwesp) - lightweight ESP AT commands parser library to communicate with ESP8266 or ESP32 Wi-Fi module using AT commands
 * [LwGSM](https://github.com/MaJerle/lwgsm) - Library for SIMCOM GSM modules to communicate with AT commands and RTOS from host device
 * [GSM_Engine](https://github.com/MikroElektronika/GSM_Engine) - Generic AT parser for AT command based modules
+* [TinyGSM](https://github.com/vshymanskyy/TinyGSM) - small Arduino library for GSM modules, that just works
 
 #### AT command parser
 
@@ -221,6 +222,11 @@ Under construct
 * []() -
 
 
+### Network protocols
+
+* [PicoTCP](https://github.com/Tubbz-alt/picotcp) - is a small-footprint, modular TCP/IP stack designed for embedded systems and the Internet of Things
+
+
 ### web-server
 
 * [mongoose](https://github.com/cesanta/mongoose) - Embedded Web Server Library. It is a multi-protocol embedded networking library with functions including TCP, HTTP client and server, WebSocket client and server, MQTT client and broker and much more.