SuperSend.io - Automate Cold Outreach Across Email, Linkedin and Twitter.
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.
nnn - Fast and resource-sensitive file manager for the terminal
draw.io - Online diagramming application
Ortto - Journeys made simple. Your customer data, messaging and analytics working together.
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.