Maya & 3DMax

FumeFX
https://www.afterworks.com/FumeFXMaya.asp

umeFX to UE4 Tutorial: Smoke/Grenade effect using flipbooks.
https://www.youtube.com/watch?v=CKbgMxLiRJM

UnrealEngine4

UE4 Gameplay

EasyActions
https://www.unrealengine.com/marketplace/easyactions

Yellow Subs Machine
https://www.unrealengine.com/marketplace/en-US/yellow-subs-machine

UE4 Procedural

Dungeon Architect
https://www.unrealengine.com/marketplace/dungeon-architect

UE4 Scene

WorldMachine + UE4: Full Workflow
https://80.lv/articles/worldmachine-ue4-full-workflow/

Interactive Tree Creator
https://www.unrealengine.com/marketplace/interactive-tree-creator

Dungeon Generator V2
https://www.unrealengine.com/marketplace/en-US/dungeon-generator

UE4 Materials

Landscape Auto Material
https://www.unrealengine.com/marketplace/landscape-auto-material

UE4 Landscape Auto-Material
https://gumroad.com/l/mBjSf

Environment Prop Master Materials for UE4
https://gumroad.com/l/TAiBJ

UE4 Lighting

Dynamic Lighting Portal System (Performance Booster)
https://www.unrealengine.com/marketplace/dynamic-lighting-portal-system-performance-booster

Performance Optimization: Shadows Triggering Zones
https://www.unrealengine.com/marketplace/performance-optimization-shadows-triggering-zones

UE4 Water

UIWS - Unified Interactive Water System
https://www.unrealengine.com/marketplace/en-US/slug/uiws-unified-interactive-water-system

Animation

Cascadeur: Physics-Based Character Animation
https://80.lv/articles/cascadeur-physics-based-character-animation/

Photoshop

3D Map Generator - Atlas - From Heightmap to real 3D map
https://graphicriver.net/item/3d-map-generator-atlas-from-heightmap-to-real-3d-map/22277498

Perspective Tools v2 (from Photoshop CS6 to the newest)
https://gumroad.com/l/MESl

VFX

B3D Plugin: ClothFX v4
https://gumroad.com/l/iHFuk

英雄之所以是英雄，是他不知道有一个阴谋在他身后。——张锐锋《古战场》