Special-Interest
Last 30 Days' Launches Space Stations 100 (or so) Brightest FENGYUN 1C Debris IRIDIUM 33 Debris COSMOS 2251 Debris BREEZE-M R/B Breakup (2012-044C)
Weather & Earth Resources
Weather NOAA GOES Earth Resources Search & Rescue (SARSAT)Disaster Monitoring Tracking and Data Relay Satellite System (TDRSS)ARGOS Data Collection System
Communications
Geostationary Intelsat Gorizont Raduga Molniya Iridium Orbcomm Global Star Amateur Radio Experimental Other
Navigation
GPS Operational Glonass Operational Galileo Beidou Satellite-Based Augmentation System (WAAS/EGNOS/MSAS)Navy Navigation Satellite System (NNSS)Russian LEO Navigation
Scientific
Space & Earth Science Geodetic Engineering Education
Miscellaneous
Miscellaneous Military Radar Calibration CubeSats Other

Miscellaneous Military

PulseSat is a satellites software and hardware trackering solution developed by GyroWise Limited.

Satellite Two Line Element Set source: CelesTrak