SnapCrab is a useful plug-in for taking a screenshot of the web page including the parts of the page which are not displayed.

SuperDrag Extension Plug-in adds powerful drag-and-drop features to your Sleipnir.

Headline-Reader plug-in is the client Style RSS reader which allows you to save important data to the local hard disk so that you can read the RSS even though you are offline. Using this plug-in, you don't have to worry about information leaking because this is not a Web style RSS reader.
Moreover, this works in a ultrahigh-speed without affecting the conditions of network connection, or maintenance.

Headline-Ticker is a clean ticker which does not display advertisements or tracks of your action.

Glanchip is a plug-in that adds a thumbnail feature on your Tab. You can enjoy Sleipnir with more intuitively.
We recommend you to use this Plug-in with Sleipnir ver2.6 or higher.

SeaHorse plug-in is a feature to customize web pages personally.
Although general web page displays are limited to the design of the operating system creator, SeaHorse allows you to add functions, change designs, and lots more; just as if you have created the Web page.

Defined Extended Menu allows you to use your own action via Mouse Gesture or Mouse Button.

LinkExtraction allows you to pick out URL from an active page and copy it to the Clipboard or arrange it and reopen it on other tabs.

UserDefinedTools allows you to add functions to Sleipnir with created files, scripts, or URIs.

UserActionExtension allows you to register scripts created by users.
Users can use scripts written in JScript/VBScript via Menu or Mouse gesture.
We recommend you to use this Plug-in with Sleipnir ver2.5.14 or higher.

Hawkeye is the Web development auxiliary Tool which reduces your scowl lines.
This allows you to work out Webpage without considering source codes.
This plug-in contains the User Interface which holds the line against existing tools, and fixes the layout, correct errors of CSS and HTML, and verifies omissions of recording.
You can do irksome tasks without stress.