You don't have to spend a lot of money to build a useful Mac software library. I've grouped freeware and Open Source software into three categories. I call the first category Favorites. These are applications and utilities that I find I use frequently for
NetDraw is a program for drawing networks. It uses (or will use) several different algorithms for laying out nodes in 2-dimensional space (3D will come later). Netdraw reads UCINET system files, UCINET DL text files, and Pajek text files (.net, .clu and .