- APRS DB0ANF
- Provides access to online station database in Germany.
- APRS Florida
- Features amateur radio's digital APRS mode and current weather in Florida.
- APRS in Switzerland
- Information on APRS in Switzerland that includes software, real-time applications, and map files.
- APRSearch
- Search application that targets sites from APRS software authors and other sites, with detailed documentation.
- APRS-IS Information
- Internet-based network provides worldwide capabilities for public service and promotions of amateur radio.
- Bavarian Packet Radio Group
- Contains information about BayCom packet radio hardware and software for radio amateurs.
- Byonics
- Details about electronic projects and kits for GPS and APRS purposes. Includes product listings and contact facts.
- CX2SA Radio
- Information about frequencies, APRS RF stations, and web servers are also provided.
- FBB
- Features amateur packet-radio bulletin board software for DOS, Windows, and Linux.
- G4JKQ
- Home page of the amateur radio station that includes links to TCP and IP Packet radio listings.
- Introduction to APRS and UI-View
- Personal site provides overview and introduction of APRS packet radios and UI-View usage.
- MM Hamsoft
- Amateur radio site of Makoto Mori offers freeware programs for packet radio enthusiasts.
- Northern California Packet Association(NCPA)
- Committee of packet representatives in Northern California fosters the digital communication modes of amateur radio.
- Packet Radio on Linux Systems
- Linux-based platform for packet radio set-up that includes photos and source information.
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