irfanview ... one of the most popular viewers worldwide.

paint.net is free image and photo editing software for computers that run windows.

gimp - the gnu image manipulation program: the free and open source image editor

sourceforge provides free & fast open source software downloads and development, and business software reviews and comparisons featuring the largest open source and business software directory.

フリーソフト・無料ソフト（フリーウェア）の紹介サイト。

github is where over 100 million developers shape the future of software, together. contribute to the open source community, manage your git repositories, review code like a pro, track bugs and features, power your ci/cd and devops workflows, and secure code before you commit it.

imageglass is a feature-rich, simple-to-use app seamlessly integrated with a clean, minimal and modern user interface, works with all image formats.

azo freeware - 優質免費軟體/可攜式軟體．提倡軟體自由．中文用戶取向 [<a href="http://www.azofreeware.com//search/label/%5b%e9%98%bf%e6%a6%ae%e8%91%97%e4%bd%9c%5d">著作</a>] [<a href="http://www.azofreeware.com/p/subscribe.html">訂閱</a>] [<a href="https://spreadsheets.google.com/viewform?hl=zh_tw&amp;formkey=dglnoxnzxzhcee5getjzvnhrnmwyr1e6ma">聯絡</a>]

windows・androidアプリのインストールと使い方 や windowsのセットアップ方法などを紹介。