Oxwall's private testing started in 2010 where as Wordpress's development started in 2001.
I believe Oxwall is at it's initial stage as for as plugin and theme development but with superb core facilities.
I've had experiences with both WordPress and Oxwall, and they serve different purposes based on what you need. If you're looking for a versatile and user-friendly platform for creating stunning websites, my recent divi theme review article dives deep into how the Divi theme on WordPress offers an incredible range of design possibilities. It's been a game-changer for me in terms of flexibility and customization. Feel free to check it out for more insights!