I've just found Syncthing and I'm blown away by this app. So, I'm interested if any of my other apps can be replaced by foss equivalents that can be synced.
My first suggestion is Obsidian - which, at first I had problems syncing with paid solutions, but syncs flawlessly with Syncthing.
Does anyone have any more suggestions? Ideally looking to sync between android devices, but any info is much appreciated.
Update : many thanks for all the suggestions - some good ones. Hopefully we can keep adding the ones we find that can be synced from local folders.
I use it with Logseq for my notes, I sync the camera for my photos, and with Keepass for my passwords
Edit: I guess Vinyl Record Player for my music as well, librera reader for my ebooks, and I'm trying AudioAnchor for my audio books (but I'm not really happy with this one and I'm going to try to find a different app)
DecSync CC is an app that stores calendar / tasks / contacts as files on the phone. You can sync them to other devices. I use it to sync our family calendar and contacts in our household. No clouds involved.
I use it on logseq, on aegis backups (2FA app), KeePassDX for my passwords, also I have a folder inside my picture galleries which is synced with my computer, so everytime I take a picture I want to save on my computer y just copy it there. Also I have plain text editor and I have a txt file shared with my computer I use it mainly to share web links between my devices. I'm still looking for ways to sync calendars and to do apps, so I can get notifications everywhere for my events so I dont forget them, but havent manage to do it just yet.
I used one called simple generic text editor available on f droid. However I just found out KDE connect works very well for sharing links and clipboard. It is even better and faster and works with almost all operating systems i guess. Would be nice to give it a try.