Sfen vs ZMap
A side-by-side look at Sfen and ZMap. For an in-depth review of either product, follow the links below.
Sfen
Office & Productivity
Sfen is an open-source screenshot annotation and collaboration tool. It allows users to take screenshots, draw on them, add text and comments, and collaborate with others.
screenshotannotationcollaborationopensource
ZMap
Network & Admin
ZMap is an open-source network scanner that is designed to perform fast Internet-wide network scans. It can scan the entire public IPv4 address space in under 45 minutes from a single computer.
networkscanneripv4fastopensource