Raph Levien

This is the web page of Raph Levien. If you're interested in what I'm up to, see my diary.

Currently I work for Google, helping prevent spam in Google Apps.

I used to be maintainer of Ghostscript, and have played a role in a number of other free software projects.

I have a number of patents, all of which are available for licensing, and all of which are subject to a patent grant for GPL-licensed software. A special prize is the Even Toned Screening, an exceptionally high quality suite of halftoning algorithms for inkjet printers.

I'm father of two amazing boys, Alan and Max.

I'm a member of the Berkeley Monthly Meeting of the Religious Society of Friends (Quakers).

I have completed a PhD on techniques for interactive curve design. Spiro is a free software library containing these techniques, and I also used them to design a number of fonts, including Inconsolata.

You may also be interested in a draft of an earlier attempt at a PhD, on Attack-Resistant Trust Metrics. The best source for that work is the chapter in Computing with Social Trust.

I have a Wikipedia entry.

I live in Berkeley, California with my boyfriend Seth.