TeXShop is an open source, freeware TeX editor and previewer for the Mac OS X platform.

It was developed by USA mathematics professor Richard Koch. TeXShop was created especially for the new Mac OS X GUI Aqua and capitalised on the native PDF support of the Macintosh operating system. Mitsuhiro Shishikura enhanced it by adding the ability to transfer mathematical expressions directly into Keynote (Apple s presentaion software) presentations. TeXShop needs an existing TeX installation.

The introduction of TeXShop caused a true TeX-boom among Macintosh users. The program (then version 1.19) won the 2002 Apple Design Award for its successful user interface. In fact, TeXShop makes it possible, thanks to pdfsync.sty , to switch back and forth between the window containing the TeX code and the one containing the PDf preview, jumping at the exactly corresponding spot, simply by a CMD-click. From TeXShop 1.35 onward this also works with multipart documents, which are joined by include . Also, with version 1.35 TeXShop was extended with XeTeX support.

The current versions are 1.4.0 for Mac OS X 10.3.x (Panther) and 2.03 for Mac OS X 10.4.x (Tiger). The Tiger version of TeXShop is capable of jumping from preview to code and vice versa without pdfsync.sty, using the extended full-text search technology (called Spotlight ) in Tiger.

For TeXShop there is a support forum, which is administered by the Germany project ApfelWiki.de.

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