Apps similar to PDF-ShellTools include PDFsam Basic, which is free and open source. Other options are PDF24 Tools, PDF.net and PDF Mixer. In total there are four PDF Editors like PDF-ShellTools for Windows, the web, Mac and Linux.
PDFsam Basic is a free and open-source desktop application for splitting and merging PDF files. It runs entirely on your own computer, so your files are never uploaded anywhere and it works fully offline.
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A web-based, all-in-one PDF editor that lets users upload, edit, annotate, sign, merge, split, and convert PDF and other file formats (DOC, DOCX, JPG, PNG), all in a secure, browser-based interface.
PDF Mixer is a PDF page tool which mixes pages of 2 or more PDF files, add PDF pages into existing PDF files and save them to a new file. With this powerful tool, you can reorder, copy, rotate, delete, switch and merge pages in multiple PDFs easily.
