Apps like SIP Switch Widget

Here are some great alternatives to SIP Switch Widget by Robert Siebeck :
Groundwire: VoIP SIP Softphone
Groundwire: VoIP SIP Softphone
★3.5
SessionTalk Pro Softphone
SessionTalk Pro Softphone
★3.5
SessionCloud SIP Softphone
SessionCloud SIP Softphone
★3.6
AGEphone
AGEphone
★4.3
Acrobits: VoIP SIP Softphone
Acrobits: VoIP SIP Softphone
★3.6
MizuDroid SIP VOIP Softphone
MizuDroid SIP VOIP Softphone
★4.0
Sipnetic
Sipnetic
★4.0
jiPBX - SIP VOIP Softphone
jiPBX - SIP VOIP Softphone
★4.3
SessionTalk Softphone
SessionTalk Softphone
★3.6
Connect.US
Connect.US
★4.2
Voip By Antisip (+Video)
Voip By Antisip (+Video)
★3.7
Xtravoip-Dialer
Xtravoip-Dialer
★3.8
Call4UVOX
Call4UVOX
★4.1
HelloBD Calling Card
HelloBD Calling Card
★4.3
REDCOM Sigma Client
REDCOM Sigma Client
★4.4
Sipdroid
Sipdroid
★3.5