Joplin is one of the most respected open-source notes apps around. It's Markdown-first, runs on every major platform, has a plugin ecosystem, and supports end-to-end encrypted sync with a handful of providers including Joplin Cloud, Nextcloud, and your own WebDAV server. For privacy-conscious users who want to self-host everything or use their existing cloud storage, Joplin offers genuine control over where your data goes and how it's protected.
Snoq approaches privacy differently. Instead of giving you the tools to configure encryption, it just encrypts everything automatically. There's no sync to set up, no cloud provider to choose, no plugin to install. Your notes are AES-256 encrypted before they hit disk — derived from your password via Argon2id — and that's the only mode the app has.
If you value open source, cross-platform support, and Markdown portability, Joplin is a serious contender. If you want encrypted notes that just work on Windows without any configuration, Snoq might be the simpler answer. The difference comes down to one question: do you want to control the security setup, or do you want it handled for you?