Self-hosted PDF editor with 50+ tools for every PDF task
Multi-platform document viewer supporting PDF, EPUB, and more
Free office suite with Writer, Calc, and Impress on any platform
Split, merge, rotate, and extract PDF pages for free
Open source PDF editor and viewer for Windows and Linux
Open source Java library for creating and parsing PDFs
Java port of PDFtk for merging, splitting, and stamping PDFs
Open source PDF and PostScript interpreter and converter
Free open source Java library for creating and editing PDFs
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