When comparing Blueprint vs Galaxy, the Slant community recommends Galaxy for most people. In the question“What is the best CSS framework?” Galaxy is ranked 29th while Blueprint is ranked 32nd. The most important reason people chose Galaxy is:
Ranked in these QuestionsQuestion Ranking
Pro Fast and lightweight
More modern UI than traditional frameworks like Bootstrap.
Pro Semantic markup
Using the custom attribute g, it's very easy to scale and maintain.
Con No preprocessor support
No support for Sass, Less, or Stylus.
Does not follow the responsive web development philosophy.
It was last updated in 2011.