Wren - Offset your carbon footprint by saving rainforests
Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.
YAYZY - Track the carbon footprint of each purchase in real-time
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
Klima - Go carbon neutral
Wondershare PDFelement - All-in-one PDF editor