Carsten Dominik wrote org-mode. Looks like she maintained Remember-mode and Planner-mode at one point though.

My fault - I remember that she wrote a popular Emacs package, but forgot the name.

Maintained, not wrote. John Wiegley wrote both.

http://www.emacswiki.org/PlannerMode

It is cool that Sacha maintained it, volunteering is awesome.

I am pointing this correction out because Sacha's primary career is as a self-promotion specialist (http://sachachua.com/blog/), so I have to be skeptical of how her name gets attached to technical work, more so than someone who doesn't pursue celebrity for profit.

People shouldn't think that it's so easy to be famous and a technical contributor. The larger contributors (like John Wiegley in this case) tend to be less famous.

Example: Sure, Linus Torvalds is a celebrity and massive contrbutor, but there are dozens (hundreds?) of other massive Linux kernel contributors who are less famous than, say, Jeff Atwood.

Wow, she is such an happy-happy-joy-joy blogger^evangelist^blogger that I never though she had time to write any code.