pdf-notes vs Plurk
A side-by-side look at pdf-notes and Plurk. For an in-depth review of either product, follow the links below.
pdf-notes
Office & Productivity
pdf-notes is a free, open source software for annotating PDF files on Windows, Mac and Linux. It allows adding text notes, highlights, drawings and stamps to PDFs.
pdfannotationnoteshighlightsdrawingsstamps
Plurk
Social & Communications
Plurk is a free social networking and microblogging service that allows users to send updates through short messages or links, which can be up to 360 characters in length. It has a timeline structure with features such as Karma and Qualified Friends.
social-networkingmicrobloggingtimelinemessaging
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