SEC Digital Calendar and Lectionary is a Chrome browser extension developed by Gareth J M Saunders. As a free program in the Browsers category, it falls under the Add-ons & Tools subcategory. This extension allows users to easily access the Scottish Episcopal Church digital calendar and lectionary through a toolbar popup window.

With SEC Digital Calendar and Lectionary, users can save time by quickly viewing the church feast of the day, including liturgical color, readings, and collect, all within a popup window on their browser's toolbar. The extension also offers the option to open the full website in mobile view within a small window, providing access to all the features of the SEC digital calendar website.

Additionally, users can conveniently open links in new tabs by right-clicking on them. This feature allows for a seamless transition from the toolbar popup window to a full tab, providing a more comprehensive browsing experience.

Overall, SEC Digital Calendar and Lectionary is a practical and efficient browser extension for individuals interested in accessing the Scottish Episcopal Church digital calendar and lectionary in a user-friendly manner.