I tried Oso and met the team and I'm a huge believer in their approach. Authorization is a widely misunderstood and often mis-engineered but crucial functionality that deserves dedicated, domain-specific tools such as Polar (their DSL) and all the supporting features.
Very cool to see all the progress and huge congrats on the launch!
Big fans of Oso here at Intercom, it flawlessly powers some pretty gnarly authorization requirements across our web application and APIs at large scale. I can strongly recommend Oso to companies who struggle with building out/ maintain consistent, scalable and reliable permissions systems in their applications. Migrating our authorization system to Oso has removed entire classes of bug reports and inconsistencies in our product.
Easy to use, great docs, and super friendly staff. The dashboard makes setting things up and then iterating smooth. Was able to put together access control very quickly.