The Garmin eTrex Summit is fully supported by GeoBuddy.
GeoBuddy can connect to the Garmin eTrex Summit to transfer geocaches, waypoints, routes, and tracks through your computer's serial (COM) port, and can display your GPS data over USGS topo maps and aerial photos.
The Garmin eTrex Summit can hold 500 waypoints. Waypoints on the Garmin eTrex Summit can contain up to 6 characters.
These are the waypoint symbols for the Garmin eTrex Summit that are displayed in GeoBuddy:

The eTrex Summit can hold 20 routes, each containing up to 125 turns or stops. Route names on the Garmin eTrex Summit can contain up to 13 characters.
The eTrex Summit can hold 11 tracks. Saved tracklogs on the eTrex Summit can have up to 250 trackpoints. The active tracklog holds 10000 trackpoints.
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