If you are a biology student, researcher, or simply a biology enthusiast eager to deepen your understanding, Cytoscape is the ideal tool for you. This software enables you to visualize molecular interaction networks and biological pathways while incorporating annotations and state data.

Without any doubt, Wireshark (formerly called Ethereal) is currently the world's most famous, foremost free and open source network packets capture & analysis tool. Its appearance puts an end to the future of all similar business software.