- 8 AGORA
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- 3 Anna Woźniak-Kot
- 8 Apple
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- 18 ASUS
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- 3 Bantex
- 4 Bc.edu
- 4 Beatles Fan Next Generation UK
- 21 Cambridge English
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- 9 Cengage Learning, Inc
- 23 Cle International
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- 7 Cotton, David
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- 5 GALAPAGOS
- 12 Gembird
- 10 Godan
- 21 Hachette
- 4 Harper Collins Publishers
- 6 Hasbro
- 11 Heinle
- 4 Hewlett-Packard
- 16 HP
- 9 hp inc.
- 4 Hueber Verlag
- 4 IBOX
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- 6 John Wiley & Sons Inc
- 20 Karlowsky
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- 28 Kino Świat
- 8 KITE
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- 24 Klett Sprachen
- 8 Klett Sprachen GmbH
- 11 LektorKlett
- 26 Lenovo
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- 4 Longman / Pearson Education
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- 6 Maclean
- 4 Macmillan Education
- 15 Marc Dorcel (FR)
- 15 Microsoft
- 24 New Generation Publishing
- 6 Nixon, Caroline
- 4 NOREL (Dr Wilsz)
- 6 Opticon
- 23 Oxford University Press
- 39 Pearson
- 5 Pearson Education
- 48 PEARSON Education Limited
- 14 Pearson Longman
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- 12 Telewizja Polska S.A.
- 4 Titan Books
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- 10 Trefl
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- 23 Viz Media
- 4 VOX
- 11 Zebra
