I use, besides local text files for temporary notes, https://cryptpad.fr.
It’s an E2E-Encrypted Browser-Based Collaboration Suite.
Basically a GPL-Licensed Google Suite Alternative with some added but also many missing features.
Open-Source and trustable in contrast to Big Tech.
Following Functions I use:
- Cloud Storage Functionality to Back Up Key Configuration Files
- Richt Text Files for Documentation
- Code Files to Store Code Pieces
- Kanban to Organize Goals / Workflows
Self-Hosting is also an option, though that depens on what ones homelab looks like. I wouldn’t want to store all Documentation on how to Restore Backups on the same server I’m having to restore.
For most purposes the Free Tier with 1GB Storage should provide enough storage for Documents.