What are the best open-source alternatives to Reef?

Question 1

Accepted Answer

14 open-source projects similar to aload0/reef, ranked by shared features. Top picks: blackyhawky/clock, etar-group/etar-calendar, fossifyorg/calendar, fossifyorg/clock, harsh251004/lovealarm, kashcal/kashcal, nexy791/ridna, nsh07/tomato, persian-calendar/persian-calendar, pranshulgg/clockmaster.

Question 2

Is blackyhawky/clock a good alternative to Reef?

Accepted Answer

Clock is a customizable, privacy‑first, open-source clock app inspired by AOSP Clock. It combines modern design, powerful features, and transparency — giving you full control over your time.

Question 3

Is etar-group/etar-calendar a good alternative to Reef?

Accepted Answer

Etar (from Arabic: إِيتَار) is an open source material designed calendar made for everyone!

Question 4

Is fossifyorg/calendar a good alternative to Reef?

Accepted Answer

fossifyorg/calendar is an open-source alternative to Reef.

Question 5

Is fossifyorg/clock a good alternative to Reef?

Accepted Answer

Combination of a beautiful clock with widget, alarm, stopwatch & timer, no ads

Question 6

Is harsh251004/lovealarm a good alternative to Reef?

Accepted Answer

harsh251004/lovealarm is an open-source alternative to Reef.

Question 7

Is kashcal/kashcal a good alternative to Reef?

Accepted Answer

Modern Android calendar with CalDAV sync: iCloud, Nextcloud, and more. Privacy-first, no tracking. On F-Droid.

Question 8

Is nexy791/ridna a good alternative to Reef?

Accepted Answer

nexy791/ridna is an open-source alternative to Reef.

Question 9

Is nsh07/tomato a good alternative to Reef?

Accepted Answer

nsh07/tomato is an open-source alternative to Reef.

Question 10

Is persian-calendar/persian-calendar a good alternative to Reef?

Accepted Answer

persian-calendar/persian-calendar is an open-source alternative to Reef.

Question 11

Is pranshulgg/clockmaster a good alternative to Reef?

Accepted Answer

pranshulgg/clockmaster is an open-source alternative to Reef.

Open-source alternatives to Reef

BlackyHawky/Clock

Etar-Group/Etar-Calendar

FossifyOrg/Calendar

FossifyOrg/Clock

harsh251004/LoveAlarm

KashCal/KashCal

Open-source alternatives to Reef

BlackyHawky/Clock

Etar-Group/Etar-Calendar

FossifyOrg/Calendar

FossifyOrg/Clock

harsh251004/LoveAlarm

KashCal/KashCal

nexy791/Ridna

nsh07/Tomato

persian-calendar/persian-calendar

PranshulGG/ClockMaster

rozPierog/Cofi

tom-murphy-development/FastTimes

vicolo-dev/chrono

you-apps/ClockYou