This is TexiWeb Jr., a super simple literate programming system built
on top of Texinfo and implemented in awk.

The "tangle" piece was successfully bootstrapped on November 4, 2013.
The "weave" piece started producing a reasonable-looking document
on November 11, 2013.

As of Fri Feb 19 12:07:09 IST 2016, both the source code and literate programming document
are licensed under the GNU GPL. See the file COPYING.

Other repositories from the same author are interesting too: e.g.
the portable C compiler
 https://github.com/arnoldrobbins/pcc-revived
and a converter from RCS to git
 https://github.com/arnoldrobbins/simple-rcs2git

VeraCrypt is a free disk encryption software brought to you by IDRIX (https://www.idrix.fr) and that is based on TrueCrypt 7.1a.
Windows / MacOSX / Linux / Source

Cryptsetup is utility used to conveniently setup disk encryption based on DMCrypt kernel module.

These include plain dm-crypt volumes, LUKS volumes, loop-AES and TrueCrypt (including VeraCrypt extension) format.

Project also includes veritysetup utility used to conveniently setup DMVerity block integrity checking kernel module.

Interesting blog, found via his critique of Julia (mostly its development model) http://danluu.com/julialang/#fnref4
His article https://danluu.com/corrections/ reminds me of Donald Knuth's "Errors in TeX"

Think of Facebook, Whatsapp, Gmail and Skype rolled into one, without the centralized surveillance and control. secushare employs GNUnet for end-to-end encryption and anonymizing mesh routing (because it has a more suitable architecture than Tor or I2P) and applies PSYC on top (because it performs better than XMPP, JSON or OStatus) to create a distributed social graph.

Plan9port, a port of many Plan 9 user programs to Unix used to live on
http://swtch.com/plan9port/, but since 2014-11-17 it has been moved to this git repository.

Rtl_power is a unix-hacker's approach to the waterfall. Its unique features include:
- Unlimited frequency range. You can do the whole 1.7GHz of a dongle.
- Unlimited time. At least until you run out of disk for logging.
- Unlimited FFT bins. But in practice I don't think I've taken it above 100k bins.
- Quantitative rendering. Exact power levels are logged.
- Runs on anything. A slower computer will use less samples to keep up.

The blog has a lot of other interesting articles, e.g. http://kmkeen.com/tiny-code/, http://kmkeen.com/flash-recovery/ , http://kmkeen.com/fp/ just to name a few.

Blog about DTrace, ZFS, RAID and more.

Interesting blog. I found the article http://bit-player.org/2016/prime-after-prime via Tony Finch's link log http://dotat.at/:

Magnitude limits for visual observation for different telescope sizes (german).