I recently started a club manager plugin for a Judo club. As for a friend association, our company did it for free. The plugin will be published on free market place after a couple of weeks... We did not do any front-end component (yet). If anyone want to join the team or have some ideas to add futur features, we would be happy.
I forgot to add the repo link: https://github.com/acte-solutions/oc-plugin-clubmanager
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