Hi, my opinion - the current blender, is not a blender without these add-ons:
MACHIN3Tools - Super organized native blender operators
DecalMACHINE - Must have for gamedev artist
MeshMACHINE - Same as DM
PunchIT - Intrude
TexTools - Additional UV functions
iOPS - My addon for daily usage with a bunch of operators
BoxCutter - Booleans
HardOPS - Extra Tools and Automation
ForgottenTools - Extra tools
Mifth/MiraTools - Additional functions
BMaxConnector - Bridge for 3dsmax
Blender to Rizom/UVLayout - Bridge for RizomUV
QuadRemesh - Remeshing
UV Packmaster 3 Pro - UV Packing
ZenUV - Extra UV tools
SimpleTabs - Addons “N” panel organizer
MaterialList - Additional Material functions
and more…