Joplin
Fits all your criteria
You can try mobile version demo here
π OSX theme
πΉ on lemmy !joplinapp@sopuli.xyz
Do you want to know the best program to do something? Ask it here and discover the best options to choose between. Do not be shy
Anyone can ask for products by making a post. There are no posts because I think people think that they can not post but they can now
Want to get recommendations to non-software topics? Go to Recommendations
rules: instance rules
Fits all your criteria
You can try mobile version demo here
π OSX theme
πΉ on lemmy !joplinapp@sopuli.xyz
Zettlr is a bit similar to Obsidian and FOSS, but imo lacks a bit in the hierarchical options.
I really like Anytype, too. Also Foss, can run/store everything locally but they also offer hosted plans. It has a different paradigm where everything is typed. But this offers a lot possibilities (linking things, using sets and collections)
I will take a look at Omnigroup.
With OneNote, I have 2 issues:
My first thought was OmniOutliner. Not cheap, but itβs best in class for sure.
For cheaper/free alternatives, go to alternativeto.net and make sure to use the filters (OS, open source, etc.)
I have heard good things about logseq and the other obsidian alternatives but in the end I never had the opportunity to try them
I have used Zettlr a lot in the past and switched to Obsidian for my general work notes. Both retain the folder structure and would fit your needs for hierarchical organisation. Just load your desired folder as project/vault and you are done.
Obsidian has better backlinks and tagging workflow and a lot of nice plugins for productivity.
Zettlr dev states it is for (academical)writing and therefore will not focus on productivity features.
For Projects I prefer Logseq, as it creates a natural structure very easily and fast. The downside for me is the non standard markdown.