Facebook for Business - Facebook Business gives the latest news, advertising tips, best practices and case studies to meet the business goals.
draw.io - Online diagramming application
SocialPilot - SocialPilot is an app designed to help businesses and professionals with social media marketing.
LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
Buzzstream - Build Relationships. Build Buzz. Web-based software that helps the world’s best marketers promote their products, services and content.
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.