When comparing Smalltalk/X jv-branch vs VAST Platform (VA Smalltalk), the Slant community recommends Smalltalk/X jv-branch for most people. In the question“What are the best Smalltalk implementations?” Smalltalk/X jv-branch is ranked 4th while VAST Platform (VA Smalltalk) is ranked 9th.
Ranked in these QuestionsQuestion Ranking
Pro Many libraries included with the environment
Pro Mercurial support
Supports modern versioning control system - Mercurial. Directly from the GUI environment.
Pro Build with rake scripts
Transparent way to build whole environment. It is simple to build it from scratch.
Pro Bugs you can find, can be also fixed by you or you can just report them
If you find bug you can create a patch and send it to the https://swing.fit.cvut.cz/projects/stx-jv/report/9
Since the core is written in C (in future maybe some part will be in C++) it is really fast.
Pro Very easy to create a prototype
Contains a GUI window builder which makes it easy for prototype creation.
Pro You can download binaries if you do not want to build the env yourself
Pro Support Smalltalk images
This allows you to store the whole environment in the state you finished and it can be loaded in a state where you want to continue.
Pro VM contains a java 1.7 support.
VM contains a java 1.7 support. Which means if you have java 1.7 jdk like (zulu 1.7) you can use java libraries within the Smalltalk/X environment.
Pro Business support
If you pay for the premium version, you will get great support.
Pro Backward compatible
You can count with VAST Platform providing backward compatibility or a documented migration guideline in case it is not.
Pro Being actively developed with predictable future
Con On windows uses ancient Borland make files
This will dependency will be removed in the future, but currently is there.
Con Pricy for business
The price is $6,995 for a new license. Updates are cheaper at about $1,995.