Myriad (typeface) Apple typography"), but it has now been replaced by San Francisco. More recent iterations of the iPod (from the iPod photo onward) used Podium Sans, which has similarities with Myriad (as opposed to Chicago), for its user interface. However, the iPod Touch and iPhone 3G replaced Podium Sans with Helvetica, which became the system font for OS X starting with OS X Yosemite. Myriad was included with the third generation of iPod. Adobe ships a large subset of the Myriad Pro family with a number of their products, including Adobe Reader. Myriad is also used in the corporate identities of
Helvetica stroke widths within a glyph. Nimbus Sans L, a version of URW's Nimbus Sans spaced to match the standard Linotype/PostScript version of Helvetica, was released under the GNU General Public License in 1996, and donated to the Ghostscript project to create a free PostScript alternative. It (or a derivative) is used by much open-source software such as R as a system font. A derivative of this family known as "TeX Gyre Heros" has been prepared for use in the TeX scientific document preparation software. FreeSans, a free font descending from URW++ Nimbus Sans L, which in turn descends from Helvetica.