Metronet Rail has installed the Ellipse Enterprise Asset Management system in a 14m deal with consultant AMT-Sybex.
The software is already used to track assets owned by both Network Rail and the Channel Tunnel Rail Link.
Implementation of the system was one of the conditions of Metronet's 30-year deal to run most of the capital's underground lines.
Ellipse replaces 150 legacy systems that contain some asset-management functionality.
l Transport for London has shortlisted seven bids for systems to use its Oystercards as electronic money.
Oystercards, currently used only to pay for tube, bus and some rail fares, are being developed for simple transactions such as buying parking tickets, fast-food meals and newspapers.
More than 2.2 million people already have Oystercards.
Transport for London's managing director of finance and planning, Jay Walder, said, "Oyster has the largest customer base of all smart cards in the UK."
The shortlisted bids are from Barclays; EDS/JPMorgan; BBVA/ Accenture/MTR/Octopus; Nucleus/Dexit/Ericsson/Hutchison 3G/Euroconex; PayPal; and RBS.
Transport for London will begin trials with the winning bidder late this year or early in 2006.