Jon Jensen

I live in Provo, Utah and work at End Point Corporation on various Internet-related projects: web applications, databases, e-commerce, scalability, system administration, and security, and occasionally, Android application development. I’m a radio amateur (“ham”) with call sign KG7TXN.

I write on the End Point blog and Somusing, blog of my wife, Erin.

Other places to find me on the web: Twitter Facebook Instagram MeWe LinkedIn End Point

My email address is You may encrypt messages to me using my PGP/GnuPG 2012 4096-bit RSA public key. (For historical reference: My 1998 DSA public key and my 1994 RSA public key.)

A random quotation from my collection:

Stable ownership is the gift of social law, and is given late in the progress of society. It would be curious then, if an idea, the fugitive fermentation of an individual brain, could of natural right, be claimed in exclusive and stable property. If nature has made any one thing less susceptible than all others of exclusive property, it is the action of the thinking power called an idea, which an individual may exclusively possess as long as he keeps it to himself; but the moment it is divulged, it forces itself into the possession of every one, and the receiver cannot dispossess himself of it. Its peculiar character, too, is that no one possesses the less, because every other possesses the whole of it. He who receives an idea from me, receives instruction himself without lessening mine; as he who lights his taper at mine, receives light without darkening me. That ideas should freely spread from one to another over the globe, for the moral and mutual instruction of man, and improvement of his condition, seems to have been peculiarly and benevolently designed by nature, when she made them, like fire, expansible over all space, without lessening their density in any point, and like the air in which we breathe, move, and have our physical being, incapable of confinement or exclusive appropriation.

—Thomas Jefferson, in an 1813 letter to Isaac MacPherson

quotation #70 of collection of 819 · another random quotation

Travel notes

A map of the route my son & I took on our 2019 trip to Armenia, Georgia, Ukraine, and Moldova: Jon and Seth itinerary in June 2019.

An interactive map of various churches we visited in north England in 2013, with links to our blog posts and photos about each: Churches in north England, 2013.

Free software

I support free software and open source. Don’t be a sharecropper! I contribute to projects including Interchange, DevCamps, and Bucardo, and keep miscellaneous scripts around.

Other free software I work most often with: Vim, tmux, Screen, awesome, Git, Rust, Go, Perl, Python, Ruby, PHP, PostgreSQL, Linux (mostly Red Hat/CentOS, Fedora, Ubuntu, Debian), Android, OpenBSD, OpenSSH, Apache httpd, nginx, Postfix, Dovecot, Pine (now Alpine), Signal, GnuPG, rsync, mtr, and Nmap, just as a sampling. Thanks to all free software developers for your time and efforts!

Human languages

Some Unicode things I keep handy:

Language family maps for reference:

My novice linguistics research: I wrote a paper for Linguistics 490 (senior seminar) taught by John Robertson, winter semester 1998 at Brigham Young University. It examines how Hebrew verb patterns (binyanim) may be semantically grouped using C.S. Peirce’s universal categories. The paper: Hebrew Verb Pattern Tendencies Clarified by Peirce’s Universal Categories (8.5″ x 11″). Reference chart: Roots in various binyanim chart (11″ x 17″).


Some of my free verse:

Many years ago, a tree fell on our car, so I wrote up the story to share.

Good causes

A few organizations I support:


Links about religion:

Johann Sebastian Bach composed some of my favorite music. See these freely redistributable Bach sheet music PDFs and the James Kibbie complete Bach organ works recordings. Mutopia collects freely usable music scores. Thanks to those who typeset the music and gave it away!



Miscellany is a collection of old Amiga-era music “modules”, including the whole U4ia and F8 collection by Jim Young, mostly created on his Amiga.

End communication.