A Bash one-liner to open the source code (in Debsources) of any file on your system (if it belongs to a Debian package).

xhyve is a lightweight virtualization solution for OS X that is capable of running Linux. It is a port of FreeBSD’s bhyve, a KVM+QEMU alternative written by Peter Grehan and Neel Natu.
The blog also has entries about 6502 assembly programming.

6502.org is a resource for people interested in building hardware or writing software for the 6502 microprocessor and its relatives.

We continually strive to remain the largest and most complete source for 6502-related information in the world. This includes everything from articles and project descriptions to schematics and source code.

Backup/restore to/from remote storage. Data is encrypted locally and de-duplicated to minimize the amount of data transferred.

V-USB is a software-only implementation of a low-speed USB device for Atmel’s AVR® microcontrollers, making it possible to build USB hardware with almost any AVR® microcontroller, not requiring any additional chip.

Minimal Raspian image for Raspberry π.

Trusted execution environment for ARM-based computers, based on
https://en.wikipedia.org/wiki/Xv6

CubicSDR is a cross-platform Software-Defined Radio application which allows you to navigate the radio spectrum and demodulate any signals you might discover.  It currently includes several common analog demodulation schemes such as AM and FM and will support digital modes in the future.  Many digital decoding applications are available now that can use the analog outputs to process digital signals by “piping” the data from CubicSDR to another program using software like Soundflower, Jack Audio or VBCable.

Currently CubicSDR supports the RTL-SDR which is an inexpensive SDR device that can be purchased online for about $10 and up.   Search for “RTL2832U” and “820T” or “820T2” on sites such as eBay or Amazon to see what’s available.   Support for more advanced and higher bandwidth devices will be added in the future.

The Password Hashing Competition (PHC) is an effort organized to identify new password hashing schemes in order to improve on the state-of-the-art (PBKDF2, scrypt, etc.), and to encourage the use of strong password protection. Applications include for example authentication to web services, PIN authentication on mobile devices, key derivation for full disk encryption, or private keys encryption.

The Deep Sweep is an aerospace probe scanning the otherwise out-of-reach signal space between land and stratosphere, with special interest placed in UAV/drone to satellite communication.