Apps like WHMCS

Here are some great alternatives to WHMCS by WHMCS Ltd. :
Freshdesk
Freshdesk
★4.2
Altametrics Support Portal
Altametrics Support Portal
★4.0
Zendesk Support
Zendesk Support
★3.2
Comodo ONE Mobile
Comodo ONE Mobile
★3.7
OSS FieldTicket Mobile
OSS FieldTicket Mobile
★3.3
APSRTC
APSRTC
★3.5
Eventbrite Organizer
Eventbrite Organizer
★3.6
Event Organizer
Event Organizer
★4.1
RJ Staff
RJ Staff
★3.7
MDM & Kiosk Mode by AppTec360
MDM & Kiosk Mode by AppTec360
★4.3
Agent AAdvantageCash
Agent AAdvantageCash
★3.4
LegalMatch App for Attorneys
LegalMatch App for Attorneys
★3.6
MobileFrame
MobileFrame
★3.7
PEPID for Android
PEPID for Android
★4.3
CCC ONE Staff Appraiser
CCC ONE Staff Appraiser
★3.9
UbiBot (Legacy Version)
UbiBot (Legacy Version)
★3.9