It should have at least a web and an android app, and sync between devices
Bonus point if it’s opensource and it’s integrated inside a calendar
I’ve tried Business Calendar but I couldn’t sync between devices without relying on Google calendar
I use jtx Board with a CalDAV server. Not sure on where the jtx devs are based but at the very least it’s open source and based on open standards.
CalDAV / CardDAV servers such as Nextcloud or Baikal usually offer Tasks along their calendar functionality. These servers then can easily be integrated into desktop clients like Thunderbird or Android apps like Tasks.org and others.
Yeah, what OPs asking for describes Nextcloud pretty well. There are good prices for managed hosting.
I am using todoist it’s simple but powerful. Some features require a paid account.
It’s from the US. I’ve been using it for years but am now actively looking for an alternative.
I’ve been trying notesnook after Evernote turned to shit. But it’s not great.