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.
Google Design Sprint Kit - Your resource for planning and running a Design Sprint
yEd - yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.
FlowMapp - FlowMapp is a UX planning tool for creating visual sitemaps and user flow.
textografo - Online diagramming application which generate diagrams based on text and allows real time...
StdLib - Discover pre-built APIs, compose your own and build apps