If you’re interested in participating in an open source project, with the specific goal of developing generic purposes algorithms in Ada, then go here.
Here’s a short quote from the website:
This project is intended to share and discuss generic ADA implementations. ADA is a very powerful language which is not yet well difused in open source community, but it can be very much useful in several areas such as real-time processing, parallel/threading tasking and is high safety code debugging.
There doesn’t appear to be any code yet, so I suspect the project is in its very early stages.
The original announcement can be found here.