Ginote is a free, serverless web app that uses the Issues of a private GitHub repository as personal notes. There is no Ginote account and no Ginote server: the app is static JavaScript, and your browser talks to the GitHub API directly, so notes and your access token never reach the site's operator. Your notes are stored in the GitHub repository you choose — a private repository keeps them visible to you alone. Your access token, not your notes, is what stays in this browser. Running the app requires JavaScript.
This is a personal project, released for free. You're welcome to use it, but I don't take feature requests, bug reports, or support questions. If you want something changed, fork it and modify it under the GPLv3 license.
issue-notes — and set Visibility to Private.
owner/repository together with the token, and press Connect.