From here, here and here.

Alda is a music programming language for musicians.

From here.

A Merkle DAG is a Merkle directed acyclic graph. That is a data structure similar to a Merkle tree but not so strict: such DAG does not need to be balanced and its non-leaf nodes are allowed to contain data.

VirtualBox 6.0 was released on Dec 18th, 2018. This is a major version upgrade. The biggest improvement for me is the HiDPI support. It makes the Ubuntu VM in my MacBook host be able to leverage the high resolution display.

From here.

From here.

Flathub, the home of hundreds of apps which can be easily installed on any Linux distribution. Browse the apps online, from your app center or the command line.

From here and here.

From here.