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Open Source Software Implementation and Development
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openPR.com - Worldwide Open Public Relations - Publish Press Releases Free of Charge
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Open Source Enterprise Solutions - Portals, ECM, eCommerce, Big Data Analytics
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OpenLinksys - News
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OpenOffice.cz | Oficiální portál kancelářských balíků OpenOffice a LibreOffice
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LinuxPortal.pl - Rozmawiamy o Linuksie, open source i Androidzie
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The DART-Europe E-theses Portal