This is a list with the Obsidian community plugins I'm using and find most useful.
In order to use these plugins you need to turn off
Safe Mode by going to
Settings → Community plugin → Safe Mode.
This plugin is a must if you use tags. It's hard to understand why the functionality of this plugin hasn't been included in Obsidian itself.
Tag Wrangler allows us to merge tags, rename them, etc. and enhances the search queries with tag-related operations.
I use these two together to have a handy calendar at the right sidebar and create a daily note or a weekly note when clicking on a day or a week.
These notes can be generated with a template. You can use Obsidian's built-in template plugin, or use a different one.
It enables syntax highlighting for source code when in editor mode. This plugin is a must if you write notes about coding. Otherwise, you don't need it.
If you can get by with Obsidian's built-in template system, you don't need this.
This lets you use Obsidian like a little, limited database. You can use the data included the frontmatter as values to query with a SQL-esque syntax.
With this plugin, you can do things like listing the latest 10 notes tagged with
#book, sorted by rating (defined as a value in the frontmatter).