Gmod+ and other old Addons


I’m about to start with Garry’s Mod again after some years break.
I’ve notice that alot of good addons back in the day does not work nowdays, so my question is: is there any similar addons out there just like Gmod+ for example? That’s all I want to be honest - all the official props.
I’ve already installed all Half Life 2 games, Counter Strike: Source etc, but still many of the props are missing, like the combine-props for example.

Hope you can help me out.
Thank you!

GMod+ is not a thing anymore. The game has a workshop integration which is fill with a lot of addons. Some old addons were updated and uploaded too. Props are no longer saved in static lists. You can search for them ingame and put them in your own spawn lists.