[sirn]

There is a web version now but it's still missing basic functionalities, let alone the more advanced ones.

I have been using the web version on Linux box for almost half a year (because I don't own a Mac right now) and found it to be acceptable _only_ as a companion to iPad or iPhone version. It's not usable standalone at all (for example, you cannot create recurring tasks, or even move a project into a folder, or even _create_ a project in a folder). I hope they improve the web version, but the development doesn't seems very active[1]

That said, I've tried everything else, including Todoist and even org-mode, but found myself come back to OmniFocus in the end since I found Perspective to be essential to my workflow (even though web version doesn't support Perspective at all, at least I can use it on my iPad). Org probably come closest to fully replacing OmniFocus, but syncing between a Linux box and iOS devices has been... not fun.

[1]: https://www.omnigroup.com/releasenotes/omnifocus-web

[user_agent]

I feel you, man. Thanks for the info about the web version, BTW. For my taste even the mobile versions of OF aren't a real thing and are acceptable only on-the-go, even the iPad one isn't rich enough. But the desktop app for OSX... That's a beast (the one I can't have, since I don't use Macs anymore).

Plus I see that the web version has no persistent offline storage / mode. That isn't going to work for me. So, not only lack of features might be a problem.

[sirn]

OmniFocus for iPad has improved a lot to the point I don't feel I'm missing too many features from the Mac version (though there are still some awkward parts in the UI, e.g. moving/creating folders and projects) and even has support for Omni Automation Plugins now, in addition to Shortcuts support.

Web version sadly has no persistent offline storage as you said. It's also veeerrrrryyy slow since every click requires a roundtrip to a server that made slightly acceptable thanks to WebSockets (I don't live in the U.S. where their servers seems to be located). I'm connected most of the time so offline storage is not that much of a concern for me. I wish Omni Group put more effort into it though, given they charge $50 a year on top of a standalone app, which is way more expensive than Todoist. :(