LLVM vs PDFpen
A side-by-side look at LLVM and PDFpen. For an in-depth review of either product, follow the links below.
LLVM
Development
LLVM (Low Level Virtual Machine) is an open source compiler infrastructure project that provides reusable components for building compiler front ends and back ends. It uses an intermediate representation that allows for optimization and translation to multiple targets.
compileroptimizationintermediate-representationopen-source
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