MQTT Topic Lab – MQTT client with buttons using command variables
Postman for MQTT: saved commands with variables, built in Tauri for instant startup.
This is a pragmatic MQTT→Android notifier with useful attention to operational details: per-topic QoS, retained-as-new behavior, per-message read/unread state and local persistence so alerts aren’t lost, plus a persistent-foreground mode for always-on connections. It’s not reinventing the wheel, but encrypted credential storage, connection testing before saving brokers, and a Compose-based UI make it a tidy, practical tool for anyone running IoT services who wants reliable mobile alerts.
IoT enthusiasts, home automation hobbyists, Android developers and sysadmins who need mobile alerts from self-hosted MQTT brokers
Postman for MQTT: saved commands with variables, built in Tauri for instant startup.
Semantic routing with distance/direction/contrast predicates beats topic-based brokers for agents.
Clean quota dashboard on Android, but macOS-first CodexBar already fills this niche.
HN email digest with topic filters when RSS feeds already exist.
Solves a real speaking problem, but random topic generators already exist everywhere.
MQTT broker on a $10 ESP32 kills the Raspberry Pi tax for home automation.