These links, which are in no particular order, open in separate tabs. Whilst the main topic is usually the interesting pre-2011 bus fleet with its many home-built bodies and second hand vehicles, many of which originated in Great Britain, the first link in the list also includes the current bus scene.
Malta Buses Huge photo gallery edited by Keith Till. The largest and most comprehensive collection of Malta bus photos on the internet, covering all eras.
Malta Bus Archive Part of the National Archives of Malta, the Photographs section holds photos taken by Malta Police before vehicles entered service. There is also a section of personal recollections of people involved in the bus industry.
Malta & Gozo Bus & Coach is a large flickr site with photos uploaded by members.
Malta and Gozo Buses is a another photo-sharing site devoted to Malta.
Johann Tonna Photography - a large Flickr site majoring on the preservation and refurbishment of Maltese buses.
M A Penn's photo gallery by Mike Penn includes several galleries of Maltese buses.
Robert Collier Maltabus - flickr site including Maltese buses and also a fascinating collection of Maltese bus models made by Robert.
Old bus Photos has a section on Malta. Click on the photo to launch the gallery.
Buses in Malta by the Huddersfield Passenger Transport Group has many photos and fleet details of old Maltese buses.
Please let me know if you have a relevant website and would like a link adding above.
Maltese Public Transport since 1856 - a fascinating history, including not only buses but also the trams and railway. See also the Vassallo Malta homepage which has links to the histories of the Gozo Ferry, the Barrakka Lift, Air Malta, and many other topics relating to Malta.
Alan Edwards has webpages covering Malta tickets, bus maps, and other information on Malta. There is also a section on the railway (see below).
Transport Tickets from Malta by Paul Xuereb.
The Malta Railway
Malta Railway by Mac & Keith is a comprehensive photographic record of the railway remains by Keith Till and Mac Head.
The Malta Railway by Alan Edwards features interesting photos of what remained of the railway at various dates, with informative captions.
Walking the old Malta Railway is by Don Gaunt who walked the line in 1995. It includes plenty of photos and description, updated in 2006 following a further visit.
Transport Malta - Malta's transport authority dealing with such matters as highways, licensing, and public transport. The new larger authority replaced the ADT circa 2009 and has wider responsibilities, also dealing with aviation and maritime matters.
Halcrow Report - Reorganisation of Bus Services in Malta. A report commissioned by the ADT and completed in 2005. This is a large PDF file (7.7 Mb) of the final report including a supplement, published January 2006.