A comparison of Apache source code with proprietary alternatives has found they are of similar quality, reports CNet. "The study found 0.53 defects per thousand lines of code for Apache, compared with 0.51 for the commercial software, on average." But over time, with many eyes viewing the code and continously patching it, it can reach higher levels of quality.
Trivia point: Apache got its name from a native American tribe but the widely-believed story is that it came from being "a patchy server". Well, that's what the Apache FAQ says.
