Active Oberon is a small but powerful language with a lot of good ideas within the language. One of the interesting additions over plain Oberon is the concept

Active Oberon is a small but powerful language with a lot of good ideas within the language. One of the interesting additions over plain Oberon is the concept and support for active cells. Active Cells provide an abstract mechanism to define systems composed of computing elements that exchange information over message channels. Not new to anyone familiar with Go Channels etc buts its one of the nice things in Active oberon and provides support for both Actor models, concurrency and parallel programming. How this applies to scalable systems and custom FPGA hardware is described in an older paper - see https://inf.ethz.ch/personal/felixf/pdfs/2012_ActiveCells.pdf https://inf.ethz.ch/personal/felixf/pdfs/2012_ActiveCells.pd... In addition to cells there is math support for tensors (via Math Array) and matlab like array processing as well. From a language implementation perspective it provides quite a lot in a relatively small, clean and easy to follow code base.