Five Torches Deep Heroes Against Darkness Hamunaptra OGL Forbidden Lands Low Fantasy Gaming Thirteenth Age Castles And Crusades Dungeon World Quest D&D 3.5 Scoundrel (Warrior) Prestige Classes D&D 5e Pathfinder 2 Advanced Player's Guide Ultimate Wilderness Ranger Epic Characters Ultimate Wilderness Hunter Ultimate Wilderness Brawler Ultimate Wilderness Shifter Ultimate Wilderness Slayer

Archetypes

In Pathfinder, archetypes are semi-multi-classes

Pathfinder 2 Core Archetypes Pathfinder Advanced Player's Guide Archetypes Ultimate Wilderness Archetypes

Codex Martialis builds

Codex Martialis Codex Martialis