There's also DecSync Synchronize RSS, contacts, calendars, tasks and more without a server https://github.com/39aldo39/DecSync https://github.com/39aldo39/DecSy

There's also DecSync Synchronize RSS, contacts, calendars, tasks and more without a server https://github.com/39aldo39/DecSync https://github.com/39aldo39/DecSync And DAVx5 https://www.davx5.com/ https://www.davx5.com/