Can someone help me find this inventor?

Hi, I remember reading here about a guy that: - worked at NASA, probably in the space shuttle, he arrived at the project solving a problem in the newspaper that NASA posted.

- he made one of the first WYSIWYG editors, and apple bought it.

- he has a blog and post about sailing, he post a lot about Alaska and I remember he has a post about how to calculate tide changes in Alaska.

I can't seem to find it googling and I lost the blog.

If you find it using google, can you please tell me what keywords do you use, my google fu sucks.

Thanks in advance, and excuse my poor english.