1.Kozea / RadicaleA simple CalDAV (calendar) and CardDAV (contact) server.pythoncaldavicalendarcarddavPythonGPL-3.05.2K total545 forks+330 starsfrom 4,858 · score 5.80
2.alextselegidis / easyappointments:date: Easy!Appointments - Self Hosted Appointment Schedulerappointmentsschedulereventstimegoogle-calendarsync+6 morePHPGPL-3.04.5K total1.6K forks+189 starsfrom 4,291 · score 5.25
3.ProtonMail / WebClientsMonorepo hosting the proton web clientswebmailpgpprotonmailprotoncalendaryarnreact+3 moreTypeScriptGPL-3.05.7K total740 forks+169 starsfrom 5,508 · score 5.14
4.sabre-io / BaikalBaïkal is a Calendar+Contacts serverPHPGPL-3.03.4K total323 forks+125 starsfrom 3,241 · score 4.84
5.intri-in / manage-my-damn-life-nextjsManage My Damn Life (MMDL) is a self-hosted frontend for managing your CalDAV tasks and calendars.caldavcaldav-clientcalendartask-managertaskmanagertasks+3 moreJavaScriptGPL-3.0644 total45 forks+28 starsfrom 616 · score 3.37
6.jelmer / xandikosA CalDAV/CardDAV server backed by GitcaldavcarddavwebdavpythongitdulwichPythonGPL-3.0613 total58 forks+22 starsfrom 591 · score 3.14
7.wsdjeg / calendar.nvimA lightweight and extensible calendar plugin for Neovim.neovim-pluginLuaGPL-3.052 total4 forks+1 starsfrom 51 · score 0.69