Are you interested in helping to translate Sumatra to your language?
See https://github.com/sumatrapdfreader/sumatrapdf/wiki/Contribute-translation

Translations of Sumatra PDF have been contributed by many people.

Translators that used apptranslator.org can be seen by visiting
https://www.apptranslator.org/app/SumatraPDF

More detailed credits for apptranslator.org translators:

* Suresh Gautam, https://twitter.com/Peace_NP, sureshgautam@gmail.com
* Gorran Kurd, https://twitter.com/GorranKurd

(If you're a translator using apptranslator.org and want more
detailed credit than the link to twitter account available on
apptranslator.org, email me at kkowalczy@gmail.com).

Translators before apptranslator.org was available:

* Maxin B. John (maxinbjohn@gmail.com) - Malayalam
* Uthen Phutneam - Thai
* Brian Musarurwa - Shona
* Mohammed Ottama - Burmese
* Jon Stødle - Norwegian Neo-Norwegian
* Pieter Kotzé - Afrikaans
* Shabab Mustafa (shabab.mustafa@gmail.com) - Bengali
* Soham Chatterjee (soham.chatterjee@gmail.com) - Bengali
* Masley b. Mastil - Malaysian
* Muhammad Syawal bin Halimun www.sabily.org (syawal@sabily.org) - Malaysian
* Drive DRKA (drka2003@mail.ru) - Belarusian
* Яўген Змачынскі - Belarusian
* Albert Bock - Cornish
* Ben Bruch - Cornish
* Steve Harris - Cornish
* Wim Benes - Frisian
* Hasitha Jayasooriya (hasithakj@gmail.com) - Sinhala
* Jegatheesan Veeramalai (vjegatheesh@gmail.com) - Tamil
* N. Ejaz Ahamed (ejaz_nasar@yahoo.co.in) - Tamil
* R. Rajesh Jeba Anbiah (rajeshanbiah.blogspot.com) - Tamil
* Glenn Wall - Welsh
* Rhoslyn Prys Cymraeg/Welsh (post@meddal.com) - Welsh
* Arden Christopher C. Chan - Tagalog
* Mark Angelo F. Racca - Tagalog
* Arnoldas Viburys - Lithuanian
* Rimas Kudelis - Lithuanian
* Viktoras Jakovlevas - Lithuanian
* Brian S. Vangsgaard - Danish
* Claus Ørnfeldt Willemoës - Danish
* Jakob Wadsager - Danish
* Lars J. Helbo - Danish
* Mikkel Vestergaard - Danish
* Nardog (nardog.takoweb.com) - Japanese
* kobachi - Japanese
* Joan Montané - Catalan-Valencian
* Pau Iranzo - Catalan-Valencian
* Beqa Arabuli (arabulibeqa@yahoo.com) - Georgian
* Amos Kotter https://sites.google.com/site/hillasystem/ - Hebrew
* Eyal Berman - Hebrew
* Elly Câmpeanu - Romanian
* Gabriel Lazăr - Romanian
* Joan Montané - Catalan
* Pau Iranzo - Catalan
* Raúl Álvarez - Catalan
* Xulio Gómez Díaz - Galician
* BJ Hill - Norwegian
* Bjørn Aas - Norwegian
* Jon Ivar F. Omland - Norwegian
* Kjell A. A. Holm - Norwegian
* Tommy M. Stephansen - Norwegian
* Slavko Majski - Serbian
* milanso (milanso@gmail.com) - Serbian
* Andriy Ilechko - Ukrainian
* Daniel Bohdan - Ukrainian
* FreeXD (https://blog.ecstart.com/?47979) - Chinese Traditional
* theowoo (https://grnrnat.net.ru/) - Chinese Traditional
* 張修銘 (cges30901@gmail.com) - Chinese Traditional
* Joonas - Finnish
* Olli - Finnish
* Pekka Halmela - Finnish
* Nikolay Ikonomov - Bulgarian
* Христо Бенев (https://hbcom.info) - Bulgarian
* Гоце Митевски (https://www.nicer2.com) - Macedonian
* Горан Обрадовић - Serbian
* Милан Гашић - Serbian
* Славко Мајски - Serbian
* H. Metin ÖZER - Turkish
* Hakan ATAÇ - Turkish
* Kerim Kalamujic (kkalamujic@gmail.com) - Bosnian
* WangKing (https://wkismet.spaces.live.com) - Chinese Simplified
* Aivo Kuhlberg - Estonian
* Cs. Gergely, NoIP (info@mthq.org) - Hungarian
* Csaba Vágányik - Hungarian
* Gábor Zsótér - Hungarian
* Lázár Viktor - Hungarian
* Richard Magyar (magyar_richard@yahoo.com) - Hungarian
* Alif Jum'an (www.boloplekcd.blogspot.com) - Indonesian
* M. Ridwan Hakim (https://rescenin.blogspot.com) - Indonesian
* Muhamad Abdul Rosid - Indonesian
* Ricki Yani Setiawan - Indonesian
* Tri R.A. Wibowo - Indonesian
* Yudi Wibisono (https://yudiwbs.wordpress.com) - Indonesian
* Begina - Polish
* Skiff - Polish
* Bernard Holý - TREVERT - Slovak
* Dalibor - Slovak
* Peter Bartik - Slovak
* Radoslav Zelenák (radoslav.zelenak@elkop.sk) - Slovak
* Damjan Gerl - Slovenian
* Janez Vehovec - Slovenian
* Martin Srebotnjak - Slovenian
* Cecilia B - Swedish
* Linus Persson - Swedish
* Mattias D. - Swedish
* Sebastian Rasmussen - Swedish
* Simon B. - Swedish
* Tommy G. - Swedish
* alex - Swedish
* Umidjon Almasov (u.almasov@gmail.com) - Uzbek
* Besmir Godole - Albanian
* Abu Abdullah (falcon.sheep@gmail.com) - Arabic
* Boubker Talibi - Arabic
* Felark (felark@hotmail.com) - Arabic
* Islam Shoman (https://about.me/drshoman2009) - Arabic
* Mohammed Al-Foulad (https://www.mbsee.info) - Arabic
* Hrant Ohanyan »»» https://haysoft.org (hrantohanyan@mail.am) - Armenian
* Igor G. Olaizola - Basque
* Xabier Aramendi (2011-2012) (https://sites.google.com/site/azpidatziak/) - Basque
* Patriccollu di Santa Maria è Sichè - Corsican
* Krunoslav Tomorad (cygnus77@gmail.com) - Croatian
* Stjepan Treger (stjepan.treger@gmail.com) - Croatian
* Jiri Saneistr - Czech
* Kristian Vrhel - Czech
* Martin Ruzicka (martin.ruzicka.cz(at)gmail(dot)com) - Czech
* Pavel Zampach - Czech
* Barry Haveman - Dutch
* Jaap Ginder - Dutch
* Jeroen Baert - Dutch
* Kristof Bal - Dutch
* Marco La Fors - Dutch
* Ricki Yani Setiawan - Dutch
* Robbert Feunekes - Dutch
* Ruud Kok - Dutch
* Stephan Paternotte - Dutch
* Wim Benes - Dutch
* bernard - French
* didier - French
* fiuzzy - French
* laclasse - French
* leo - French
* pconno - French
* phoenix - French
* Dimitris Mytilinaios - Greek
* George Georgiou (geonetor@yahoo.gr) - Greek
* Giorgos Dimopoulos (geodimo1985@gmail.com) - Greek
* XhmikosR - Greek
* Alessandro Mariani - Italian
* Alessandro Visentin - Italian
* Angelo Contardi - Italian
* Antonio Colombo - Italian
* Cosimo Prete Damiano - Italian
* Massimiliano Beltrando - Italian
* Mirco Scottà - Italian
* Roberto Boriotti - Italian
* iBlawgger - Italian
* Adham Beyki (odinay@gmail.com) - Persian
* Ali Nayeri - Persian
* DR. dawood fakhim - Persian
* IRIman (iriman@chmail.ir) - Persian
* Mardi Az Pansad Dastgah Artesh - Persian
* dawoodiran@gmail.com - Persian
* داود فخیم - Persian
* Francisco Fuchs (pontocinza.blogspot.com) - Portuguese - Brazil
* Paulo R. M. Cereda (cereda AT users DOT sf DOT net) - Portuguese - Brazil
* Bruno Rodrigues - Portuguese - Portugal
* Ricardo Santos[bogas] (https://www.meta-morf.pt.vu) - Portuguese - Portugal
* Sérgio Marques , 2010-2012 - Portuguese - Portugal
* Carlos Luna - Spanish
* Giordano Sologuren - Spanish
* Javier Gutiérrez [https://guti.isgreat.org] - Spanish
* Jose Virgili - Spanish
* José Luis Rivera [jlrn7@yahoo.com] - Spanish
* Juan Vílchez [https://www.juanvilchez.es] - Spanish
* LinoSP [https://reactos.wordpress.com] - Spanish
* Pedro Sanchez [https://www.pedrosanchez-net.es] - Spanish
* pragmart [https://putolinux.wordpress.com] - Spanish
* Andreas Hopp (teraflop@arcor.de) - German
* Christopher Amann - German
* Lars Wohlfahrt (www.eviltux.de) - German
* Michael (quelbs@gmail.com) - German
* Simon Bünzli (zeniko@gmail.com) - German
* 4Li - Korean
* Han Seung-ho (silversoul@korea.com) - Korean
* Hong Seung-geol (hsgno5@hanmir.com) - Korean
* Karnes Kim (karnes@gmail.com) - Korean
* Dmitry Yerokhin (erodim@mail.ru) - Russian
* Victor Kozyakin - Russian
* Zero-8 - Russian
* Nguyễn Lương Đống (https://sites.google.com/site/nguyenluongdong) - Vietnamese
* Tào Trần Vương Thắng (https://keaclamviectot.blogspot.com) - Vietnamese