Chiri

About

Chiri is a cross-platform CalDAV task management app for organizing tasks across devices. It syncs with CalDAV servers such as Fastmail, Nextcloud, Radicale, and Baikal, so your tasks stay up to date wherever you are. The website describes compatibility with most CalDAV servers, subtasks, dragging and reordering of tasks, OAuth login for supported servers, repeating tasks, and WebDAV Push support on supported servers for near-instant sync.

Chiri is available for macOS through a direct installer, Homebrew (brew install --cask chiri), and Nix (nix-darwin). The same project also offers builds for Windows and Linux.

Chiri is licensed under the zlib/libpng license. The project's website notes that its developer works on it in their free time, and it links to a privacy page describing the data Chiri processes.