Submit portable freeware that you find here. It helps if you include information like description, extraction instruction, Unicode support, whether it writes to the registry, and so on.
Authors wrote:Laverna is a JavaScript note-taking web application with a Markdown editor and encryption support.
It's built to be an open source alternative to Evernote.
Laverna is another well rounded Electron app, i.e., it is Chrome based -- thus the download size.
It should also be noted that the current stable version (v0.7.3) isn't natively portable; as shnbwmn already indicated, only the upcoming Release Candidate (v0.7.4-RC1) available from Github is portable.