Run the 9front variant of the plan9 operating system in the browser. Mentioned on the 9fans mailing list
https://marc.info/?l=9fans&m=173906659913041&w=2

The CM software implements the construction of ring class fields of imaginary quadratic number fields and of elliptic curves with complex multiplication via floating point approximations. Additionally it provides an implementation of the fastECPP algorithm for proving primality of integers. It consists of libraries that can be called from within a C program and of executable command line applications. For the implemented algorithms, see A. Enge, The complexity of class polynomial computation via floating point approximations, Mathematics of Computation 78 (266), 2009, pp. 1089–1107.
Found via https://matheplanet.at/matheplanet/nuke/html/viewtopic.php?topic=266257&post_id=1939590

See also https://www.multiprecision.org/paridroid/index.html for PariDroid, a port of PARI/GP to Android

Found on a discussion of version control systems on the TUHS mailing list https://www.tuhs.org/pipermail/tuhs/2024-December/031229.html
See also https://neugierig.org/software/blog/2024/12/jujutsu.html for an attempt on an explanation "high-level enough to read and think about, without providing so much detail that it washes over you."
https://ahal.ca/blog/2024/jujutsu-mercurial-haven/ is an article from a Mercurial users.

The statement "I've found that Aberth performs worse [than Weierstrass-Durand-Kerner] on most examples as its faster convergence is offset by the slower evaluation." is interesting.
Fredrik Johansson is the author of https://mpmath.org/, https://arblib.org/ and https://flintlib.org/ arbitrary-precision libraries and of the Mathematical Functions Grimoire https://fungrim.org/

Learn about LVM snapshots and use them for my backups.
Found on the tarsnap page https://www.tarsnap.com/snaptime.html

I discovered this blog via the link to http://johnj.com/posts/to-the-metal/ on https://planet.lisp.org/
His static site generators https://github.com/eigenhombre/weeds and https://github.com/eigenhombre/organa look interesting too.

jq is like sed for JSON data - you can use it to slice and filter and map and transform structured data with the same ease that sed, awk, grep and friends let you play with text.

LDAP stands for Lightweight Directory Access Protocol. The lightweight part comes from the fact it does not implement ALL of the standard. X.500 is quite unwieldy, and much of it has been superseded (e.g. the OSI networking stack) or considered impractical (e.g. such as canonical per entry Distinguished Names) or undesirable (e.g. publishing directories of private entities like businesses).
Found via a link on ... to https://wiki.gentoo.org/wiki/Project:Prefix

Common Lisp program trying to map between Unix and Lisp concepts.

Measurements with internal and external reference clock.