Visualization Tool

I want to implement a web-based interface to visualize threats. The information to be visualized will be available in a text file. The interface can be similar in nature to Kaspersky real-time threat map but not identical or very close. Priority will be given to interfaces that look appealing/unique/nice but also don’t take very long to load. I’m open to suggestions on libraries/API/Open Source to be used as well as the language(s). Let me know about your suggestions. Please provide some details so that I know you have experience. Otherwise, your bid/proposal will be ignored. No corps/solution firms are welcome to bid! I’ll consider only individuals. Let me know if you have any questions.