OneNote
Evernote
Google Keep
Simplenote
Notion
Standard Notes
Joplin
Workflowy
CryENGINE
Unreal Engine
Unity
Godot Engine
Blender
Stencyl
GDevelop
Cocos2d
OneNote
CryENGINECryENGINE is recommended for experienced game developers and studios that aim to produce high-end, visually impressive games and have the resources to invest in powerful hardware and learning the engine's more complex systems. It's also suitable for projects that demand advanced rendering and graphics capabilities, such as first-person shooters or open-world exploration games.
For me it is a convenient and compact tool in which I can put all my ideas, goals, thoughts
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Unreal Engine - Unreal Engine 4 is a suite of integrated tools for game developers to design and build games, simulations, and visualizations.
Google Keep - Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.
Unity - The multiplatform game creation tools for everyone.
Simplenote - The simplest way to keep notes. Light, clean, and free. Simplenote is now available for iOS, Android, Mac, and the web.
Godot Engine - Feature-packed 2D and 3D open source game engine.