Godot Engine - Feature-packed 2D and 3D open source game engine.
pixeldudesmaker - Simple, web-based pixel art character generator.
RPG Paper Maker - Website
Game Character Hub - helper program for game design (RPG Maker XP/VX and more)
Construct 2 - Scirra Construct is a 2D game development engine with a focus on building games visually.
Universal LPC Spritesheet Character Generator - Powerful, animated character generator for creating 2D spritesheets