Open Spaceflight Engine
OSE is a project with a goal of filling the gap for an opensource spaceflight simulator. The plan is to build a custom game engine to suit the needs of simulating spaceflight, ensuring versatility, cross-platform functionality, and - probably most importantly - low system requirements.
OSE is in the planning phase, but this is not intended to last long.
User contribution is intended to be the main driving force for the development of OSE, being an opensource project. The engine will be developed in the Rust programming language, so if you have experience, your contribution means a lot. For the cross-platform aspect, the primary graphics backend will be Vulkan-based, so if you have experience with Vulkan, even better.