The famous plane manufacturer Airbus has several factories all over Europe and they manufacture different parts of their planes at different sites. To be able to transport even large pieces of very large planes from one site to another they developed the Airbus Beluga, Airbus A300-600ST. Five Belugas have been built 1992 to 1999 and Airbus is said to be developing an even bigger model.
Picture of an Airbus Beluga at Napoli (Naples) airfield 24.10.2012 by T.J. Hämäläinen.

EI-STL is a Boeing B737-440F freighter. It started its carrer as a normal B737-400 passenger aircraft, being first delivered to Air UK Leisure in June 1990. It served at Air UK Leisure, KLM Royal Dutch, S7 Siberia Airlines, Globus and GECAS before being converted in May 2014 into a freighter version B737-400F. Ever since it has been working for Kahala aircraft leasing, Jettime and ASL Airlines Ireland.
Picture from Helsinki-Vantaa airport 12.5.2018 by Ilkka Siissalo.

EI-STK is a similar old B737 than the one shown above. It was delivered as new to Aer Lingus in 1991 and it flew for Aer Lingus and Ryan International until 2005. Then it was sold to Aerosvit Airlines and registered in Ukraine until 2013 when it came to Jet Time for leisure flights. Its been a freighter for ASL since 2017.
Picture from Helsinki-Vantaa airport 24.8.2019 by Ilkka Siissalo.

ASL Airlines France, formerly Europe Airpost, is a subsidiary of the ASL Airlines Ireland group, some of which planes are shown above. ASL Airlines France is both a cargo operator and a passenger plane company, which rents its planes especially for leisure flights. In this respect this picture is in the wrong category here under "cargocompanies", but it was good to keep ASL listed in just one place. ASL has similar subsidiaries elsewhere also, for example in Hungary.
This machine F-GZTU is a Boeing B737 version 700 which was originally delivered to easyJet in the UK in 2004. easyJet used it 2004-2011, after which it was first just stored and then sold to Enerjet. Enerjet leased it to several lessors including Transavia of the Netherlands. It was sold to ASL Airlines France in 04/2017 which has both used it itself and also twice leased it out to Air Transat of Canada. Since 04/2019 it is back to ASL France.
Picture from Paris Charles de Gaulle international airport 11.11.2019 by Ilkka Siissalo.

Although this cargo plane carries (partly) the colours of DHL, it is not owned by DHL but by ASL Ireland. It is EI-LDC, an old Airbus A300F4-605R. At the point of time when this photo was taken, this machine kept flying regularly between Leipzig and Helsinki, going nowhere else.
Picture from Helsinki-Vantaa airport 22.5.2024 by Ilkka Siissalo.

This is an old Airbus A319 version 115X which first flew in February 2006. It first flew in German register for the Chinese company China Sonangol, then 2007-2011 for Sonair and since 2007 for Whitejet of Portugal. At the time this photo was taken it belonged to a Croatian company listed as Aviation Horizons, but there was no information on such a company available, the machine had not been reregistered and as is evident from the picture it is missing one engine. All windows were covered, but no cargo doors were visible.
Picture from Porto airport in Portugal 29.4.2018 by Ilkka Siissalo.

TF-BBJ of Bluebird Nordic is a Boeing B7373 which originally flew in passenger traffic for Australian Airlines and Qantas. It was delivered to Australian Airlines in 1991. It was in 2015 converted to a freighter owned by the Bank of Utah and it has ever since flown for Bluebird having Keflavik as its home base.
Picture from Keflavik, Iceland 23.5.2018 hby Ilkka Siissalo.

D-DHKN is a Boeing B757 version 223. It was delivered as new to American Airlines in February 2002 and it was converted to a freighter and sold to DHL Air in February 2018.
Picture from Helsinki-Vantaa airport 26.3.2019 by Ilkka Siissalo.

Another picture of the same Boeing B757 D-DHKN as een above.
Picture from Helsinki-Vantaa airport 26.3.2019 by Ilkka Siissalo.

Boeing B757-200 N910FD is already an old plane. When it was new, it was delivered to Air Europe in Britain. After that it has flown for Taesa, Avianca, Gecas, Transwede, Blue Scandinavia, Britannia Airways, Air2000, First Choise Airways, Skyservice Airlines and now since 2008 for FedEx as a cargo plane.
Picture from Helsinki-Vantaa airport in Finland 24.8.2019 by Ilkka Siissalo.

Genex Ltd. is a small Belarusian cargo plane operator, which flies with two planes. This one, EW-259TG is an Antonov AN26. Genex is based in Minsk and it has cooperation agreements with Belavia, Czech, Lufthansa and LOT Polskie Linie Lotnicze.
Picture from Helsinki-Vantaa airport 12.5.2018 by Ilkka Siissalo.

The same Genex Antonov An26B seen from the front.
Picture from Helsinki-Vantaa airport 12.5.2018 by Ilkka Siissalo.

Suparna Airlines, known in Chinese as Jinpeng, is an airline based in China. It was formerly known as Yangtze River Express and later Yangtze River Airlines after launching passenger services. The company's headquarters are in Shanghai. This machine, B-1340, is a Boeing B747-400F freighter machine, first taken in use in July 2007. Before Suparna it has flown for TNT Airways, Emirates, ASL Airlines and the US company Aircastle. Suparna has had it since 2017. This one has never been a passenger plane, but was built as a freighter right from the beginning.
Picture from Amsterdam-Schiphol 16.3.2022 by Ilkka Siissalo.

UPS Worldwide Services Boeing 757 freighter N427UP is not a converted old passenger plane, but it has always been a freighter of the type Boeing 757-200PF. UPS got it already in September 1992, so it has flown a lot.
Picture from Stockholm Arlanda 3.4.2019 by Ilkka Siissalo.

West Air Europe / West Air Sweden, operating as West Atlantic, is is a cargo airline based in Gothenburg, Sweden. It operates scheduled and ad hoc freight charter services for FedEx, DHL, TNT and UPS. It is also contracted to operate mail flights 6 nights a week on behalf of the Swedish post office and Royal Mail. Its main bases are Lidköping-Hovby Airport (LDK) and Malmö Airport (MMX).

SE-MAN is a British Aerospace ATP machine which at least in 2020 seems to operate regularly between the cities Katowice and Köln (Cologne). Here we see it at Vaasa airport in Finland 15.8.2008.
Picture from Vaasa 15.8.2008 by Ilkka Siissalo.