Call Blocker

Block unwanted calls, spam and telemarketingGPL-3.0-only

SpamBlocker (Call & SMS)

Spam Call/SMS blockerMIT

Yet Another Call Blocker

Block unwanted calls effortlesslyAGPL-3.0-only

Call Limiter

Limit call duration per contact and automatically hang up when time is upGPL-3.0-only

Call Counter

Control of the Plan of outgoing calls and sent smsGPL-3.0-only

Element X - Secure Chat & Call

Sovereign. Seamless. On MatrixAGPL-3.0-or-later

sms2call

Make a call when receiving a defined SMSMIT

ProximitySensorFix

simple fix for during call proximity sensor issuesGPL-3.0-or-later

Schlikk Calls

Change volume on call so that you don't miss themMIT

Emerald Dialer

Make calls, view call logGPL-3.0-only

Vibe

Vibrate on a call answer or endGPL-3.0-only

Flash Alert (Calls & SMS)

Blink the terminal when receiving a call, SMS or an application notificationGPL-3.0-only

Amadz - Calling App

Clean & intuitive Phone Dialer app following Material Design principles.GPL-3.0-only

Raise To Answer

Simply hold your phone to your ear to answer an incoming callMIT

Silence

Block unknown callersGPL-3.0-only

myLock utilities

Lockscreen improvementsGPL-3.0-only

Saracroche

Block unwanted spam calls automatically and protect your privacyGPL-3.0-or-later

aTalk

XMPP/Jabber client with encrypted instant messaging and video callsApache-2.0

Koler

uniquely stylized phone app with customizable featuresGPL-3.0-only

OpenContacts

A different database for contacts to keep them private only to you.GPL-3.0-only