I have never run into such software and it would be wrong to do this. Open source is a well understood and non-controversial designation. If you are a developer

I have never run into such software and it would be wrong to do this. Open source is a well understood and non-controversial designation. If you are a developer you have run into the OSD for sure and therefore, even if you don't agree with this use of the expression, if your goal is to be clear and understood, you'd be a fool to call your software open source if it does not use an OSI approved license because it would be confusing and you'd be aware of this fact. The usual qualifier for software with available source code is source-available. There's no doubt about it. We really don't need even more confusion around the terms of free software and open source than we already have.