Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.
Invision - Prototyping and collaboration for design teams
Bigtent - BigTent is a web-based organization and communication portal for groups.
Sketch - Professional digital design for Mac.
Nabble - Nabble is a forum software that are embeddable and fully customizable with scripting language.