OSS Nation is a 100% free international platform dedicated to Brazilian jiu-jitsu lovers. It helps you easily find seminars, Open Mats, instructors and academies near you, anywhere in the world.
Too many events are still only announced on social media. OSS Nation simplifies finding and sharing jiu-jitsu events around the world.
The project was designed by practitioners for the community. It’s independent and funded by discreet ads related to BJJ or combat sports. That’s what keeps it free for everyone.
My name is Mika, a web developer and passionate jiu‑jitsu practitioner. I created OSS Nation to offer a simple, useful tool accessible to all practitioners worldwide.
You can support the platform by sharing the site, adding your club’s seminars, or contacting us to suggest ideas or partnerships.
OSS Nation is completely free for practitioners. You can explore, register, or cancel a seminar without any fees. Only instructors are subject to a commission on paid registrations: 7% for 10 participants or fewer, 5% for 11 to 50, and 3% above 100. Private lessons have a flat 5% commission. Payments are only taken on the day of the seminar, and cancellations are free until 00:00 the day before. This model funds the platform while remaining fair to everyone.