MQTT.fx is a MQTT Client written in Java and based on Eclipse Paho. Payload can now be saved as raw (binary), plain text, hex (fomatted), and base64 encoded. The program supports import/export of Topics (respectively, for publishing and subscribing) and Clipboard Messages. Also, it has the option to clear/keep the Messages Buffer on unsubscribe (by now, buffer is cleared on unsubscribe).
Notes for Google Keep allows users to work on Google Keep on a minimalist layout.