- Traffico Trentino
- Traffie Navigation & Traffic
- Traffy Bus
- Trafikpoint
- Trail Treker
- Trailforks
- Trailmaker's Camino
- Trailmaker's Eurovelo 6
- Trailmark
- Trails & Places
- Trails Offroad
- TrailSmart: Great Trails
- TrailTracker for ORV riders
- Trailz - Let's Ride!
- Train Destinations - Arrive
- Train Times
- Train TimeTable
- Train Timetables in Italy
- Train Track - For CTA L Riders
- Train Tracker - Trainspotting Tool
- Train Tracking
- TrainLCD
- Trainline: Voyage train et bus
- TrainPal - Pas chère trains
- TrajectPro
- Trak Solution
- Trakery.com
- Trakk
- Trakkar
- TRAKKEO
- Trakkit - GPS Phone Tracker
- Trakm8 Connect
- Trakm8 Drive
- TRAKmy
- TRAKOM
- Trakopolis
- Trakpro Live
- Traksolution Gps App
- Trakzee
- Trakzee Local
- Trakzee Mini
- MCR Tram
- TRAM d’Alacant
- Tram Master
- Traqueur de tram
- TramBusAround
- Tramigo
- Tramoji – Odjezdy MHD v Praze
- Trampo
- Tramsterdam
- Trans Jogja
- Trans Semarang
- Trans-Bridge Lines
- TransantiagoMaster
- TranSapp
- Transavold
- Transchem Car Wash
- Transconomy Collector
- Transcorp
- Transdev Ile de France
- Transdev Rhône Alpes Interurbain
- Transight
- Transimex
- Transit for CUMTD
- Transit Lines - Public Transit
- Transit Stop: CTA Tracker.