What are the most common project formats for modern NLE software? For my sound syncing tool I'd like to implement saving project to file which will be suitable for most modern non linear editors. I try to avoid looking into each proprietary format of major vendors, because some of them are closed binaries.

Surprisingly there is only Apple provides clear description of its XML-project format.

So far I know about these formats:


Advanced Authoring Format (AAF)
Open Media Framework Interchange (OMFI/OMF)
Edit decision list (EDL) - plaintext


Are there any other common XML or plain-text based project formats to transfer between different software applications?
Those are the three that are industry standard, XML is a useful one to include though because Final Cut (which oddly is still highly utilized in the industry) uses it.  Also XML can easily talk between all Adobe applications and Da Vinci.