Modern APRS Web Client & Digipeater

APRStac is a free, open-source APRS web client and digipeater for amateur radio. Real-time map, IGate gateway, Meshtastic bridge, email gateway, BBS, and fileshare. Single binary for Windows, Mac, Linux, and Raspberry Pi.

A modern APRS web client, digipeater, I-Gate and BBS. Single binary, real-time map, multi-protocol support including VARA and meshtastic integration. Runs on Windows, Linux, Android, and Raspberry Pi.

Everything you need for APRS in a single application.

Live station tracking on a Leaflet map with heading arrows, Maidenhead grid overlay, MGRS coordinates, and configurable station ghosting. Optional green/yellow/red station status reporting across food, water, shelter, power, medical, comms, fuel, and personnel.

WIDEn-N digipeating with path expansion and per-port controls. Bidirectional RF-to-Internet gating relays local traffic to APRS-IS and gateways messages back to heard stations.

Track weather station sensor data over time with interactive charts. View temperature, humidity, pressure, wind, and rainfall history per station with configurable time ranges.

Host your own message board over RF. Remote stations connect via AX.25 to list, read, and post messages. Connect to other BBS systems with the built-in terminal client.

Forward APRS messages to email and reply back. SMTP/IMAP support with automatic ACKs, threading, and retransmission.

Built-in tile caching with LRU eviction (up to 10 GB). Load MBTiles files for fully offline operation.

Bridge LoRa mesh networks to APRS. Import Meshtastic node positions to the map via TCP or USB serial.

Real-time position from serial GPS modules. Auto-update station coordinates with map follow mode.

KISS TCP/Serial, Meshtastic TCP/Serial, VARA FM, UDP Broadcast, Encrypted TCP, and TAK (Team Awareness Kit), all working in unison.

APRStac runs as a local web server, so any device on your LAN can access the full interface from a browser. Run it on a Raspberry Pi and use it from anywhere in your home.

A dedicated Android app with built-in AFSK modem, plus a responsive mobile-friendly interface for remotely accessing your desktop station from any phone or tablet.