sumatrapdfreader / sumatrapdf

SumatraPDF reader

ahrm / sioyek

Sioyek is a PDF viewer with a focus on textbooks and research papers

ArtifexSoftware / mupdf

mupdf mirror

dengxibo / sumatrapdf-plus

SumatraPDF fork: Chinese EPUB/MOBI, smart PDF dark mode, OCR, TTS, offline dictionary.

libvips / libvips

A fast image processing library with low memory needs.

galkahana / HummusJS

Node.js module for high performance creation, modification and parsing of PDF files and streams

galkahana / PDF-Writer

High performance library for creating, modiyfing and parsing PDF files in C++

ghaerr / microwindows

The Nano-X Window System

zint / zint

A barcode encoding library supporting over 50 symbologies including Code 128, Data Matrix, USPS OneCode, EAN-128, UPC/EAN, ITF, QR Code, Code 16k, PDF417, MicroPDF417, LOGMARS, Maxicode, GS1 DataBar, Aztec, Composite Symbols and more.