For a good example, read http://www.evanmiller.org/dont-kill-math.html

Interpreters/compilers for more than 100 programming languages which can be used on-line.

Interesting blog from a recovering video games programmer.

by Alan A. A. Donovan, Brian W. Kernighan

Interesting blog, found via his critique of Julia (mostly its development model).

Mark Chu-Carroll's blog covers many subjects, including mathematics, physics and programming. In this article he describes his design of a programming language suited for an editor (think about a more readable
version of TECO's language).

Despite the availability of many excellent books and scientific articles and daily discussions on comp.lang.fortran, information about modern Fortran programming is sometimes difficult to find. There is a need for something that changes faster than books, papers, and documentation, but is more persistent and organized than a newsgroup. The Fortran Wiki aims to fill this void. Its mission is to provide an open and community-driven venue for documenting and discussing all aspects of the Fortran language, from compilers and standards and best practices and design patterns.

Article about the continued use of Fortran in scientific computing and a few candidates for successors (Haskell, Clojure and Julia).

This is the first half of a two-part blog post that is motivated-by and mostly "about" two software ecosystems I've been poking around at recently. The first (and subject of this post) is I'll roughly call "interactive scientific Python", which includes primarily SciPy/SymPy/NumPy, IPython, and Sage; the second (subject of next post) is a new interactive scientific language Julia, which has a lot of complicated and subtle relationships with the former. If you hate Python, skip this post because it is really just background for why I care about the fate of a few Python packages.