Be advised, though, some warnings about using boot module addons:
- There is no interface for managing, enabling or disabling boot module addons short of manually adding/removing the relevant addon files from the addons directory.
- These addons are not "official" and won't be automatically updated. Since they're not game module addons, though, they won't invalidate your characters.
- Boot module addons apparently count toward the "soft maximum" number of addons you can have installed (enabled or disabled) before the game starts fairly consistently crashing when you try to load a character.
- Caveat emptor, use at your own risk, no warranty expressed or implied, if it breaks, you get to keep both pieces.

ZOmnibus Check (v1.0.7, last update 2024 Nov 09): This was the original boot module addon I mentioned in the above-linked post. It modifies the Addons dialog, adding visual highlighting to addons that would conflict with each other if enabled (as shown below), so that you don't accidentally enable several of them at once. Primarily this covers ZOmnibus/ZOmnibus Lite and their component addons (because even I have trouble keeping track of all of them sometimes

Savefile Notes At the Top (v1.0.0): Requested by astralInferno. This addon interacts with the Savefile Notes addon, moving the savefile note added by that addon from the bottom of the savefile description to the top, so it doesn't get pushed off the screen if you have a lot of addons.
Main Menu Shortcuts (v1.1.1, last update 2024 Sep 24): Requested by nsrr. The goal is to add "shortcuts" to the main menu dialog (hence the name) to bypass the New Game dlalog. Currently, if you have only one game module installed, we modify "New Game" to e.g. "New Game (T.o.M.E.)" and have it skip straight ahead to character creation; if you have more than one game module installed, you can choose a module to be treated as the "default" in this manner via the option "Options | Game Options | UI | "New Game" shortcut module" (only accessible from the startup screen). In theory, we could also add a "Load Game" shortcut if you only have one character (or a most-recently-used-character shortcut, if that information is recorded anywhere).
Sort Addons (v1.0.3, last updated 2023 Jun 10): And speaking of having lots of addons…

Addon Cleanup (v1.0.2, last update 2020 Dec 28): Requested by nsrr. Adds two buttons to the Addons dialog: Disable All and Disable Auto:Enabled, which do pretty much what they say. This is useful for setting up addons for a character — you can quickly disable them all and enable only the ones you want to use for this character. If you have addons you want to use for all characters, you can set them to Manual: Enabled and use the Disable Auto:Enabled button to disable the rest.
Load Games with Long Names (v1.0.1, last updated 2023 Jun 10): This one works around a bug in the Load Game dialog that can happen if any of your characters have very long names. You probably won't run into the bug unless you're testing the limits of my Longer Character Names addon, but that's how I tripped over it, so…

Dialog Tweaks (v1.0.1, released 2024 Sep 24): A few QoL tweaks to various startup dialogs, notably the ability to cancel out of the "really load this character in developer mode?" warning dialog via <Esc>, and not having your "Load Game" changed to "New Game" out from under you.
If I update these addons in the future, or add new boot module addons, I'll update the links up here at the top as needed and add descriptive notes down below.