I moved from Emacs org-mode to Obsidian with the help of the obsidian-tasks plugin, which lets you write queries for tasks similarly to Dataview. I used a few of those queries to build up an Agenda view that matched my custom agenda buffer in org-mode. I put together a little write up here: https://davi.sh/blog/2022/01/obsidian-one/

Great!

I use the Tasks plugin for this. Tasks are created by creating markdown lists. You can put tags in with hashtags and due dates in with (and this bit I dislike, even though there's a command for it) the calendar emoji followed by a date.

E.g. (note HN strips out emoji)

    - [] Write documentation for Foobar #docs #personxyz (cal emoji) 2022-05-22

You then write a query in a markdown code block with a custom query language.

E.g.

    ```tasks
    not done
    description does not include #deferred
    due before today
    path does not include Templates
    ```

For recurring tasks, I combine with the periodic notes plugin, I put the tasks in my daily/weekly (I don't use monthly but it is an option) with labels like #wednesday if it needs to done on a specific time. Then I include appropriate queries in my daily notes to bring up the relevant tasks, and I also have a Todo note with various longer term/backloggy tasks.

There are other plugins you can use, like Dataview which is the subject of this post (but means each Todo needs to be its own note), or the Todoist plugin, but Tasks is the one which works for me.

I add a tag, which filters it into a table. Pretty rudimentary but it meets my needs.