Security suites
There are a number of all-purpose security suites that combine a variety of functons. Some are better integrated than others and none has the best software in all categories. I do not personally use a suite but they are quite popular and PC Magazine gives the results of its tests on the leading offerings. Note their overall conclusion:
There are two Editors’ Choices in this roundup, both demonstrating considerable maturity. But even the best products in this category are so complex they fall behind in some ways, for example in antispam protection.
The magazine (actually Neil Rubenking) picks ZoneAlarm Internet Security Suite and Norton Internet Security 2007 as the best. Apparently Symantec has been working to make Norton less intrusive and heavy-handed. Making Noton less of a system hog would certainly be welcome; I have often complained about its big drag on performance. Also, once it’s on your system, it takes a real effort to remove it.