Tracker may also refer to a dog or breed of dog that is trained and/or suited to

Netmail tracker, autonomous netmail processing software in FidoNet and compatible networks

Index tracker, a type of passively managed mutual fund that seeks to track the performance of a benchmark market index such as the S&P 500

Someone specialising in tracking, skilled in finding and following a trail.

S-2 Tracker, A carrier based ASW aircraft manufactured by Grumman

A cereal bar manufactured by Mars, Incorporated and sold in the UK

Tracker, music software

BitTorrent tracker, a server that directs the BitTorrent downloads and uploads

Geo/Chevrolet Tracker, a compact SUV produced from 1990 until the end of the 2004 model year

Track (disambiguation)

Tracker (TV series), a television series starring Adrian Paul and Geraint Wyn Davies

OpenTracker is the file manager and desktop in the BeOS

Tracker, a search utility for Unix-likes

Tracker (band), an indie rock band from Portland, Oregon.

TRACKER, a tracking system, designed for the recovery of stolen vehicles, operated by TRACKER Network UK Limited

An electronic diagnostic tool made by Huntron (also known as Analog signature analysis)

Radar tracker, a system used by civil and military users for associating discrete radar plots with individual targets, and forming estimates of those targets' locations, headings and speeds

Motion tracking computer systems which follow the motions of an actor to allow those motions to be used in computer animation.

Tracker action, in music, a form of mechanics used in certain Pipe organs.

Tracker (granola bar), the granola bar manufactured by Mars, Incorporated

Solar tracker, a device used in some solar energy applications for orienting a solar photovoltaic panel or a concentrating solar reflector toward the sun

An issue tracking system or bug tracking system for computer software.