OpenPDF vs Viber
A side-by-side look at OpenPDF and Viber. For an in-depth review of either product, follow the links below.
OpenPDF
Office & Productivity
OpenPDF is an open-source Java library for creating and editing PDF documents. It provides APIs for PDF creation, manipulation and forms. OpenPDF is lightweight, fast and has no dependencies.
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Viber
Social & Communications
Viber is a free messaging and calling app for smartphones. It uses your phone number to connect you with people in your contacts and allows free calls, texts, photos and video messages over WiFi.
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