Hardware designs, test benches
We dont do VHDL. There are several new HDL languages. We use Verilator and IkarusVerilog for simulation.

Gitlab enables us to self host a fully functional git repository. 

We use CocoTB for our testbenches, and Python for our scripting requirements.

We write our performance tools in C/C++,  but also device simulaiton models.

imgui provides a well established muit platform GUI framework.

GoCD is our central CI technology to integrate designs and design elements hostet on private git repositoeres, public proprietary repository soltuions like github.com , and Gitlab

Readthedoc

Zulip is our forum platofrm to provide support to our users.

Docker is the technology we use to make open soruce EDA tools available to our users and clients, on site or in the cloud.

https://quasar.dev/

PostgreSQL, a well established cornerstone for web soltuions.

KiCad, the leading open source PCB design tool.