Creately - The new interface for work to ideate, plan, and execute
UI Movement - The best UI design inspiration, daily
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.
Muzli - UI/UX and Design Inspiration Chrome Extension
Cacoo - A cloud-based diagram maker for companies, teams, and you.
UI Jar - Hand-picked design inspiration for your real life projects