Open Source Alternatives to
Lightweight multi-format document reader
SumatraPDF: A versatile, lightweight document reader.
SumatraPDF is a versatile and lightweight document reader designed for Windows. It supports multiple formats including PDF, EPUB, MOBI, CBZ, CBR, FB2, CHM, XPS, and DjVu, making it a comprehensive solution for all your document viewing needs. The software is distributed under the (A)GPLv3 license, with some components under the BSD license, ensuring it remains free and open-source. SumatraPDF is known for its simplicity and speed, providing a clutter-free, efficient reading experience without compromising on features.
SumatraPDF is an excellent choice for users seeking a straightforward, efficient, and versatile document reader. Its multi-format support and lightweight design make it a standout option for both casual and power users alike.