The LaTeX2e kernel
The expl3 (LaTeX3) Development Repository
Easy-to-use middle and back-end "form/table/chart" solution
Lighter, faster browser kernel of blink to integrate HTML UI in apps
The universal markup converter
Spelling, grammar and style checking on LaTeX documents
Import YAML/JSON-formatted configuration files into Keycloak
An ebook reader application supporting PDF, DjVu, EPUB, FB2, etc.
A PDF Reader in JavaScript
OCRmyPDF adds an OCR text layer to scanned PDF files
An open source RDP server
A simple interface for working with TeX documents
open source Java library for creating and editing PDF files
WebDriver for Firefox
Open source PDF editor
HTML, CSS and JS framework for developing responsive websites and apps
A Privacy First PDF Toolkit
Windows/macOS/Linux binaries and installation methods of TinyTeX
A JSON viewer plugin for Notepad++
Blazing-fast Data-Wrangling toolkit
Make Zotero effective for us LaTeX holdouts
Lightweight and flexible command-line JSON processor
JSON that's part of C++
the MiKTeX source code
Simple extensive tar-like archive format with indexing