I replced Notion with this open-source alternative that even runs on my NAS

At present, Notion is one of the most widely used tools among individuals and corporations, thanks to its multifunctional abilities. Not only can it be used as a simple note-taking tool, but it can also function as a personal knowledge management system, a database of company assets, and a portal to create and host landing pages. Of course, it can also be used for a myriad of personal tasks, such as planning a holiday or creating to-do lists. However, the primary concern with Notion is that it isn't open-source; you're relying on Notion's servers to sync your data. This isn't ideal if you plan on inputting sensitive data into the platform. Owing to this, I started hunting for an alternative that I could self-host -- even on my NAS.