Azure DevOps does a good enough job for us.
If you have it electronically, the absolute best case in 500 years is that it will be a relatively easy job for software archaeologists or historians to decode, assuming it's been periodically backed up to new media for all those years. The most likely case, though, is that in 150 years, the servers it was stored on, which have not been running for 80 years, will be picked over and/or melted down for precious metal contents by a tinker who wanders between mud-hut villages repairing their ancient metal pots in exchange for dried fish.
The only issue I've ever had with these types of tools is they usually charge a monthly subscription. That probably makes sense for some kind of agency, but as an individual I don't need a subscription to a logo service. I just need a simple logo now, one-time.