Motiff

Motiff is an online UI design tool that facilitates real-time collaboration among teams. It offers features for creating, editing, and commenting on designs, along with cloud synchronization for file management and design systems. The platform also includes prototyping capabilities and a 'Develop Mode' for developers.

Motiff is primarily a UI design tool with strong collaboration features, rather than a dedicated brand guideline and asset management platform. While it offers centralized storage for design assets, version history, shareable links for designs, and real-time collaboration, it doesn't explicitly provide a 'Brand Guideline Editor' or specific features for defining color palettes, typography settings, or logo variants in the context of a brand guide. Its 'Design Systems' feature focuses on component libraries and styles for UI design, which is related but not the core offering of a brand guideline platform.