public traded as nasdaq helsinki qtcom industry computer software founded 4 march 1994 as trolltech founders eirik chambe eng haavard nord 1 headquarters espoo finland 2 area served worldwide key people juha varelius ceo mika harjuaho cfo lars knoll cto 3 products qt qt creator qbs revenue 26.9 million 2015 4 operating income 1.8 million 2015 4 number of employees 200 as of june 2016 update 4 website www.qt.io the qt company formerly known as digia qt qt development frameworks qt software trolltech and as quasar technologies is a software company based in espoo finland . it oversees the development of its qt application framework within the qt project . it has core r & d in oslo norway as well as large engineering teams in berlin germany and oulu finland . the qt company operates in china finland germany norway russia korea and the united states . 2 contents 1 products 2 history 3 see also 4 references 5 external links products edit the company provides software development platforms and frameworks as well as expert consulting services . its flagship product is qt a multi platform graphical user interface gui framework written in c . qt is popular with application developers using c but is supported by bindings for other programming languages too such as python . qt also includes packages such as data structures and a networking library . the popular free and cross platform kde plasma desktop environment and software compilation uses qt library . the company also employs several kde developers . in 2001 trolltech introduced qtopia which is based on qt . qtopia is an application platform for linux based devices such as mobile phones portable media players and home media . it is also used in many non consumer products such as medical instruments and industrial devices . qtopia phone edition was released in 2004 and their greenphone smartphone is based on this platform . history edit trolltech was founded by eirik chambe eng and haavard nord on 4 march 1994 . they started writing qt in 1991 and since then qt has steadily expanded and improved . trolltech completed an initial public offering ipo on the oslo stock exchange in july 2006 . on 28 january 2008 nokia corporation announced that they had entered into an agreement that nokia would make a public voluntary tender offer to acquire trolltech . 5 the total cost for nokia was approximately 104 million . 6 on 5 june 2008 nokia s voluntary tender offer was approved for all the shares in trolltech . by 17 june 2008 nokia had completed its acquisition of trolltech . on 30 september 2008 trolltech was renamed as qt software and qtopia was renamed as qt extended . on 11 august 2009 the company s name was changed to qt development frameworks . 7 nokia sold the commercial licensing business of qt to digia on march 2011 . 8 in september 2012 all remaining qt business was transferred to digia . 9 in september 2014 digia plc. announced that it formed the qt company a wholly owned subsidiary to drive forth qt development and market expansion . 10 in may 2016 the qt company announced its demerger from digia plc. and began trading on the nasdaq helsinki stock exchange as qtcom . 11 see also edit free software portal qt jambi qt for java qt extended application platform for embedded linux based mobile computing devices greenphone qt based smartphone nokia n9 a qt based mobile phone references edit 20 years of qt code . retrieved 10 june 2016 . a b office locations . retrieved 10 june 2016 . the qt company management . retrieved 10 june 2016 . a b c financials qt for investors . retrieved 10 june 2016 . nokia to acquire trolltech to accelerate software strategy . 28 january 2008 . retrieved 28 january 2008 . nokia ostaa norjalaisen ohjelmistoyrityksen in finnish . 28 january 2008 . retrieved 28 january 2008 . new name new domain announced for qt development frameworks . 11 august 2009 . retrieved 18 august 2009 . lawton christopher 7 march 2011 . nokia to sell qt business . wall street journal . about digia qt . digia announces the qt company launches a unified website and unleashes a 20 indie mobile monthly subscription plan . 16 september 2014 . retrieved 10 june 2016 . nasdaq helsinki welcomes qt group plc . 4 may 2016 . retrieved 10 june 2016 . external links edit official website v t e qt technologies meta object system qml qtscript qt quick qt style sheets signals and slots tools qbs qmake qt creator qt linguist bindings list for qt 4 list for qt 5 php qt pyqt pyside qtruby qt jambi hbqt related topics digia kde mer meego qt company qt project retrieved from https en.wikipedia.org w index.php title the qt company & oldid 739037960 categories companies formerly listed on the oslo stock exchangecomputer companies of norwayfree software companiesnokia assetsnorwegian brandsqt software software companies of norwayhidden categories cs1 finnish language sources fi use dmy dates from july 2012articles containing potentially dated statements from june 2016all articles 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