Shameless plug (I am one of the devs): Starcounter (http://starcounter.com http://starcounter.com) is an in-memory application platform, which is comprised of

Shameless plug (I am one of the devs): Starcounter (http://starcounter.com http://starcounter.com) is an in-memory application platform, which is comprised of an in-memory database (ACID-compliant) with a built-in app server. You can compose a complex business system out of small apps (micro apps if you will). Apps don't pull the data from the db - they run in the db. Multiple apps that run in the same db share the data in real time. Our first clients are retail, CRM and advertising tech. From dev perspective, we like to call our approach "collapsing the stack". There is no ORM. Your code classes become the database tables. You can use our (Web Components based) approach to create thin client HTML views that bind to the data using JSON Patch. This saves you from running huge amounts of glue code, which is typical for traditional software stacks. Right now we are on Windows/C#. Linux and macOS is coming next year. Other languages will follow.