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pdfforge.org
Ascensio System SIA
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The Document Foundation
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Geek Software
Microsoft Corporation
KDE
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Core Software Solutions
Graeme Gott
Infraware
Patrizio Bekerle
PDFKeeper
Streetwriters (Private) Ltd.
Ben Olden-Cooligan
KDE Community
Foxit Software
Tenorshare
MobiSystems