Ranked in these QuestionsQuestion Ranking
Pro Widely used
NUnit is one of the most popular testing frameworks for .NET. Other than giving a certain sense of security in the continuation of the project, it also means that there are a lot of third-party resources, guides and tutorials available for NUnit.
Pro Excellent availability of learning resources
Due to it's popularity and active development, plenty of learning resources (such as detailed documentation and various tutorials) exist for learning NUnit.
Con Slow to adapt
NUnit is developed slowly; some developers complain that it is no longer able to keep up with new testing approaches.