Joplin is an open-source note app that supports markdown and works across devices. It’s a favorite for people who want flexibility and control. Here is why: Being open source means the app is transparent and community-driven. You can even self-host your notes if you want. Let’s break it down. Joplin lets you write in markdown, attach files, and organize notes into notebooks and tags. It also has a web clipper for saving content directly from the browser. For syncing, you can connect it with services like Dropbox, OneDrive, or your own server. Next steps: Install Joplin on desktop or mobile. Start with markdown notes, then explore syncing with your preferred cloud service. Takeaway: Joplin is perfect if you want an open-source, markdown-friendly note system with full control over where your data lives.