This map shows buses and their stops (red and yellow dots) on the London bus or river bus network in approximately real time – thanks, TfL!
When you open the dropdown, you can type a route number to go straight there in the list. When you first select a route, there might be some ‘settle down’ activity as the live data from TfL only includes future activity, not past.
I have similar things for the Tube and National Rail, and an awesome bookmarkable train times journey planner. Donate
— Matthew, September 2013