QCCOM
Free serial port monitor and UART terminal with auto baud rate
...Logs support UTF-8, GBK and HEX with Linux-terminal-style colors, timestamps, filtering, search and replay. A full VT100 terminal works with U-Boot and Linux shells.
Also included: TCP/UDP/MQTT/WebSocket/BLE/SSH clients, Modbus master and slave, CRC tools, HEX/ELF/map viewers, firmware size diff, SVD registers, live plots, file and folder compare, a code browser with Git history and a circuit simulator. 10 UI languages, free and open source (Apache-2.0).