9 NICE document tools

1. PDF24 Creator
The 100% free PDF Creator and PDF Convertor works with all Windows programs.

If you do not want to install the software, you may use the PDF24 Online PDF Converter to convert the most common file formats into a PDF.

2. Doxillion Document Converter
Use this to convert PDF and document file formats (including words file) free.
Doxillion is a multi format document file converter that is free. It supports batch file converting.
3. Open Clip Art Library
This project aims to create an archive of clip art that can be used for free for any use.
All graphics submitted to the website should be waived of all rights, including copyright.
4. Google docs
Create and share documents on the web and access them from any computer or smart phone. The familiar desktop feel makes collaborative editing easy. You may share documents, spreadsheets, presentations, drawings and forms online. It is free.
5.  Nitro PDF Reader
It is free a PDF reader to create, annotate, save forms, and sign PDF files.

6. Iconspedia
It is a place to browse and download high quality FREE icons.

7. Freepik
Freepik helps you to find free vector art, illustrations, icons, PSD and photos for using in websites, banners, presentations, magazines.

In order to use a vector or a part of it, you must credit the author.

8. Pexels

Pexels provides high quality and completely free stock photos and videos licensed under the Creative Commons Zero (CC0) license.

9. CutePDF

Portable Document Format (PDF) is the de facto standard for the secure and reliable distribution and exchange of electronic documents and forms around the world.  CutePDF Writer is the free version of commercial PDF converter software. CutePDF Writer installs itself as a "printer subsystem". This enables virtually any Windows applications (must be able to print) to convert
to professional quality PDF documents - with just a push of a button!

10. Pixabay 

Pixabay.com is an international, copyleft and free-to-use website for sharing photos, illustrations, vector graphics, film footage and music. As of November 2017, Pixabay offers over 1,188,454 free photos, illustrations, and vectors and videos.