Myriad (typeface) the Local Hard Disk Drive. Myriad Arabic was designed by Robert Slimbach, with the help of Adobe’s technical team as well as outside Arabic experts. The principal outside consultant was Dr. Mamoun Sakkal. Five weights of Myriad Arabic (which include Latin-alphabet characters) were licensed by Apple for inclusion with macOS, but must be manually enabled by the user. Myriad Hebrew is an extension of Adobe’s popular humanist sans-serif typeface Myriad, bringing the sensibility of Myriad into another language and another writing system. Myriad Hebrew is one of the most extensive families of Hebrew typefaces available today, comprising twenty different digital
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.