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.
Bookmarked Sun Nov 23 12:23:56 2014

"not rocket science" (the story of monotone and bors) http://graydon2.dreamwidth.org/1597.html
Interesting story about continuous integration and the beginnings of distributed version control.
Bookmarked Sun Nov 23 11:59:01 2014

Interesting article about JPEG compression by Andi Wingo, author of Guile.

Exploratory programming environment and documentation generator for Common Lisp.

HelenOS is an open-source microkernel-based multiserver operating system written from scratch. It runs on several different CPU architectures (IA-32, x86-64, SPARC V9, IA-64, PowerPC, ARM, MIPS). HelenOS prides in portability, modularity, clean design and coding style.

It does not mimic any existing system and it is not meant to be POSIX-compliant or UNIX-like at all. Just as an example, HelenOS does not support fork().

Rediscovered Fri May 3 15:15:31 2019, when I copied the following description:
HelenOS is a portable microkernel-based multiserver operating system designed and implemented from scratch. It decomposes key operating system functionality such as file systems, networking, device drivers and graphical user interface into a collection of fine-grained user space components that interact with each other via message passing. A failure or crash of one component does not directly harm others. HelenOS is therefore flexible, modular, extensible, fault tolerant and easy to understand.

..is a gnome-shell extension that adds smart and user-friendly tiling window features to your gnome desktop, inspired by bluetile.

Interesting books and software about compiler/interpreter construction, including Scheme 9 from Empty Space and SubC.

Realistic software simulation of a given Blinkenlight panel

Collection of articles about software defined radio.

With this posting of the Bell System Technical Journal from volume 1 issue 1 in July 1922 to the final issue published in December 1983, we are pleased to be able to open the vault of this knowledge to our global technical colleagues.

Alcatel-Lucent is now proud to partner with IEEE to provide access to the Bell Labs Technical Journal (1996-present) and all of its predecessors: the Bell Labs System Technical Journal (1922-1983), AT&T Bell Labs Technical Journal (1984), and AT&T Technical Journal (1985-1996).

Airspy is a very tiny (5×3 cm) software defined radio receiver capable of sampling 10MHz of spectrum anywhere between 24MHz and 1.7GHz.
USB interface, works with Linux.