Resources and materials to get yourself started with open source
An open source, general-purpose policy engine
A library that can help you with generating PDF documents
A PDF Reader in JavaScript
open source Java library for creating and editing PDF files
Open source PDF editor
The universal markup converter
OCRmyPDF adds an OCR text layer to scanned PDF files
A simple interface for working with TeX documents
WebDriver for Firefox
HTML, CSS and JS framework for developing responsive websites and apps
An open source RDP server
A JSON viewer plugin for Notepad++
Skin changer for League of Legends (LOL)
HTML5 client solution for generating PDFs
An ebook reader application supporting PDF, DjVu, EPUB, FB2, etc.
A PDF processor written in Go
Simple extensive tar-like archive format with indexing
JSON that's part of C++
Make Zotero effective for us LaTeX holdouts
TeX previewer for Mac OS X
Open-Source Python3 tool for recognizing layouts, tables, and math
Innovative and open-source visualization application
the MiKTeX source code
Google's data interchange format