软件熵（Software entropy）是指软件的无序程度。软件熵可用来说明软件在经过不断修改后，无序程度提高的现象。

伊瓦尔·雅各布森用以下的方式描述「软件熵」：

Andrew Hunt及David Thomas用破窗理论来说明如何避免在软件开发过程中软件熵的增加。

代码重构可以渐进的降低软件熵。

A work on software engineering by Ivar Jacobson et al. describes software entropy as follows:

Andrew Hunt and David Thomas use Fixing Broken Windows as a metaphor for avoiding software entropy in software development.

The process of code refactoring can result in stepwise reductions in software entropy.