Companies often choose frameworks by the same criteria – which is popularity, documentation and matureness. And speed of course. Or only speed. But even if you found the "perfect" framework, what can you actually expect from it? And what are marketing promises even the best framework won't be able to deliver? From the perspective of someone who started an open source framework years ago I'll share my idea of where frameworks differ, where frameworks can help you and why engaging with one is unlike just buying a product.