Offline Download
Houdoku allows you to download chapters so that you can read them when you're offline.
Downloading chapters
To download chapters from a series, click Options -> Download at the top right of the series page. You can also select individual chapters to download from the table.
You can view and change the download location in Settings -> Library.
Viewing downloads
On the Downloads page, you can view, pause, and clear the download queue. You can also view and delete downloaded chapters from this page.