Multiple Projects Support
Work on different organizations, and simultaneously test the unrelated functionality in a single solution!
Typically, having only one project in a solution is quite enough to progress with Salesforce development. But in cases when you need different feature blocks to work together in one application, or you need both sandbox and production projects to test the functionality, the support of multiple projects in a single solution will definitely come in handy, and allow you to accomplish these tasks in the most efficient way.
When accessing several projects at the same time, you can make use of the majority of features in The Welkin Suite IDE: from running tests to creating Lightning Bundles, examining the log files, and more.