LUMA Partners, a New York/San Francisco-based boutique investment bank which gives strategic advice to media technologies companies, provides what is calls "LUMAscapes"- market maps for different segments of the Digital Media universe.
One LUMAscape released last week maps investment firms that provide capital to digital companies, by type and geography. It shows 316 firms on one page (click on image to enlarge). See how many you can spot that have Philly connections. LUMA welcomes feedback and suggested additions.
You can access other LUMAscapes here.