The Markdown flavor cowyo supports is pretty basic (e.g., no tables) and I am still unsure on how to make use of its wiki features but none of that makes it any less remarkable, IMHO.
A feature-rich wiki webserver for minimalists. cowyo is a self-contained wiki server that makes jotting notes easy and fast. The most important feature here is simplicity. Other features include versioning, page locking, self-destructing messages, encryption, and listifying. You can download cowyo as a single executable or install it with Go. Try it out at https://cowyo.com.
To view it, just go to http://localhost:8050 (the server prints out the local IP for your info if you want to do LAN networking).
Furthermore, a companion CLI utility named cowyodel can be used to exchange encrypted info between computers relying on cowyo.
There is now a command-line tool, cowyodel to interact with cowyo and transfer information between computers with only a code phrase: schollz/cowyodel.
cowyodel allows simple and secure sharing of text/data between computers. cowyodel temporarily transfers your data (with optional client-side encryption) to a cowyo server where it resides until the other computer downloads it using the provided secret code phrase.
Download cowyo latest Windows release (v2.12.0, dated 2018-04-22, 64-bit only) from https://github.com/schollz/cowyo/releases. Cowyodel downloads (v1.2.3, dated 2017-08-18, 64-bit only) are at https://github.com/schollz/cowyodel/releases.
FYI, cowyo's dev is also behind the forked online editor at https://notepad.js.org/.