What are some alternatives?
When comparing Gephi and Looker, you can also consider the following products
Microsoft Power BI - BI visualization and reporting for desktop, web or mobile
Sisense - The BI & Dashboard Software to handle multiple, large data sets.
yEd Graph Editor - 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.
TapClicks - TapClicks is a cloud-based solution designed to unify marketing, advertising and branding activities in a user-friendly, adaptable and scalable interface. Read more about TapClicks.
Redash - Data visualization and collaboration tool.
Funnel - Never miss closing a deal, or following up with a customer again