I'm a long-time user of free/open source software, and write various things for both fun and profit. I don't take myself all that seriously and I do all of my own stunts.
You can find me at these fine establishments on the web: Open Source Musings, The Monday Kickoff, Weekly Musings. and The Plain Text Project.
Authored Comments
Good point. With the people I helped out this year, cost wasn't the biggest issue. It is the freedom that Linux gives them. That starts off with the no-cost (financially speaking) software, and then often extends into how Linux and FOSS free them from various proprietary encumbrances.
I don't believe there's a dedicated cloud service. But, as Michael suggests, you should consider storing the master copy in a location where all your devices can make edits. That can be, for example, an instance of Nextcloud or ownCloud.
My KeePassX database is saved in my Nextcloud instance, and I can get to it on my laptop, my phone, or my tablet. It's more convenient and consistent than having multiple copies floating around.