Shiira

Shiira is a lightweight Mac web browser built around the WebKit engine, aiming to deliver quick page rendering while adding extra interface flexibility and a more visual approach to tabbed browsing.

It is best suited to Mac users who enjoy tweaking how a browser looks and behaves, and who like managing many open pages with thumbnails and overview-style navigation.

A Mac-first interface with room to personalize

Shiira is written in Cocoa and leans into Mac-style presentation, including an interface that borrows familiar patterns from system preferences and other Mac applications. The browser includes a customizable toolbar, plus appearance controls such as switching the window look (including Aqua and Metal styles) and changing toolbar icon sets. Depending on the version, bookmarks, history, downloads, and feeds are surfaced through a drawer-style panel or through floating, translucent palettes that can be opened from the toolbar.

Tabbed browsing that favors visuals

If you keep lots of pages open, Shiira’s tab features stand out. Alongside standard tabbed windows, it supports draggable tabs for quick reordering. It also offers a thumbnail-based alternative to classic tabs, presenting open pages as previews you can scan and jump between, and this view can be disabled if you prefer a simpler layout. For an even broader view, an Exposé-like tab overview can show multiple open pages as thumbnails at once, helping you pick the right tab without hunting by title.

Useful extras for everyday browsing

Shiira covers familiar browser basics while adding several convenience tools. It includes Private Browsing, an RSS reader, and a search field that can be set up with different search engines. There are also options related to browsing data, including cookie and cache removal at termination. For page handling, Shiira supports in-browser PDF viewing. It also provides features aimed at more technical use, such as a built-in page inspector, source viewing, and the ability to display HTTP headers in a source window.

Where it shines, and where it can frustrate

Because Shiira uses WebKit, pages are intended to render with the same standards focus as other WebKit-based browsing on Mac, and it is often described as quick while staying relatively lightweight. At the same time, the browser has a history of rough edges, especially around bookmarking and parts of the interface that feel unfinished or inconsistent. Development has also been discontinued, which can matter if you prefer actively maintained software.