PDFpen vs Psi+
A side-by-side look at PDFpen and Psi+. For an in-depth review of either product, follow the links below.
PDFpen
Office & Productivity
PDFpen is a PDF editing software for Mac that allows users to easily edit, annotate, and sign PDF documents. It has tools for adding text, images, signatures, highlights, shapes, and more to PDFs.
pdfeditorannotateeditmac
Psi+
Social & Communications
Psi+ is an open-source instant messaging client that supports multiple protocols including XMPP, IRC, Telegram, and more. It's cross-platform and offers features like tabbed chats, file transfers, encryption, and custom themes.
opensourcemultiprotocolencryptedcrossplatformcustomizable