Dolphin Smalltalk is described as 'Dolphin is a complete development IDE for Smalltalk targeted specifically at Microsoft Windows. It is capable of creating standalone GUI and console executables that will run on any version of Windows from XP up to the current Windows 10' and is an app in the development category. There are more than 10 alternatives to Dolphin Smalltalk for a variety of platforms, including Mac, Windows, Linux, BSD and Web-based apps. The best Dolphin Smalltalk alternative is Microsoft Visual Studio. It's not free, so if you're looking for a free alternative, you could try Microsoft Visual Studio or Eclipse. Other great apps like Dolphin Smalltalk are Apache NetBeans, MonoDevelop, Mono and F# (programming language).