design – Alternatives to InVision DSM that are software agnostic

We’re looking to host our documentation, UI library and possibly code in one place and need something like InVision DSM, but don’t want to be locked into the Sketch/ InVision ecosystem in case we switch to Figma/ XD in the future.

Right now we have our UI kit in Sketch, our documentation in OneNote, and our code on Vercel. Any thoughts on a low cost/ low maintenance solution?