Freemake Video Converter

Freemake Video Converter
https://www.freemake.com/free_video_converter/
Freemake Video Converter converts video and movies between 500+ formats and gadgets for free!
Convert to MP4, MP3, AVI, WMV, DVD, iPhone, Android. Convert YouTube to any format. Absolutely free. No trials or limitations. Recognized as #1 video converter for 9 years. Loved by 93 Million users.

Must have PDF software

PDF XChange Viewer 2.0.42
http://www.oldversion.com/windows/pdf-xchange-viewer-2-0-42

PDF-XChange Viewer is a free PDF editor/reader, which allows you to view and edit PDF formatted documents. The application has an attractive and intuitive user interface.

PDF-XChange Viewer allows you to work with your documents both quickly and smoothly. You can skip pages, view documents in a number of layouts, and search to locate pages and keywords with ease. The applications toolbars are completely customizable with numerous configuration options.

PDFill FREE PDF Tools
https://www.pdfill.com/pdf_tools_free.html
PDFill PDF Tools are FREE PDF functions to merge, split, reorder, delete, encrypt, decrypt, rotate, crop and reformat PDF pages, to add information, header, footer and watermark, to convert images to PDF, PDF to images or PostScript to PDF, to delete, flatten and list form fields, to scan to pdf, to create transparent image, and more.

PDFsam Basic

https://pdfsam.org/pdfsam-basic/
PDFsam Basic, a free, open source, multi-platform software designed to split, merge, extract pages, mix and rotate PDF files

PDF Split Or Merge

http://www.pdfworkshop.com/

Split or merge your PDF books in seconds ... For Free !
PDF Split Or Merge is a FREE powerful utility that you can use to split or merge your PDF books. PDF Split Or Merge is designed for novice PDF users. It just takes four simple steps to finish the job. The program is absolutely free, and its main target is to split or merge your PDF books easily, just in seconds.

AlterPDF

https://www.alterpdf.net/
AlterPDF , powerful free software for converting, modifying, and manipulating PDF files.
Convert PDF to images, Convert images to PDF, Convert PDF to Word, Convert Word to PDF, Excel to PDF, Merge PDF files, Split PDF Apply watermarks Crop PDF pages, rotate pages Extract text, extract images from PDF, Extract pages from PDF, Remove pages from PDF, Change PDF metadata, Encrypt, decrypt PDF, protect from copying.

PDF2Printer Batch Print

http://www.win10pdf.com/pdf-to-printer.html

Batch PDF Printing, Print PDF to your printer in batch with the PDF2Printer Batch Print tool.

Smart Rotation, Automatic rotation of PDF pages is featured. You can disable the rotation at any time you want.
Smart Scaling, Shrink large pages and expand small pages to fit on medium.

Briss

http://briss.sourceforge.net/

This project aims to offer a simple cross-platform (Linux, Windows, Mac OSX) application for cropping PDF files. A simple user interface lets you define exactly the crop-region by fitting a rectangle on the visually overlaid pages.
It's licensed under GPL!