3CX vs Alcatel-Lucent Enterprise Rainbow

3CX is a business communications platform with web, desktop and mobile apps for Windows, Linux, macOS, iOS and Android. It includes an auto attendant, advanced call routing and voicemail transcription. The 4SC Basic Free plan is listed at free and includes 10 users and four simultaneous calls; its license must be renewed manually each year. Basic costs $300 a year, billed annually, and includes 40 extensions and eight simultaneous calls. The service also lists 40 included users. The maker is 3CX, founded in 2005. The supplied facts give Tampa, Florida, and Nicosia, Cyprus, as headquarters locations.

Alcatel-Lucent Enterprise Rainbow is a cloud communication and collaboration platform for businesses, combining UCaaS services with a CPaaS developer platform. Teams can use real-time messaging, audio and video calls, conferencing, screen sharing, and file sharing. Meetings support up to 120 participants and 12 simultaneous video streams. Rainbow can connect an existing on-premises telephony system or cloud PBX, including ALE OXO Connect, OmniPCX Enterprise, and non-ALE PBXs. Connectors integrate communications with tools such as Microsoft Teams and Salesforce; APIs and SDKs connect apps, websites, and workflows. Developer resources include REST APIs, web, iOS, Android, and Node.js SDKs, webhooks, bots, and a free sandbox. Rainbow is available on Android, iOS, macOS, web, and Windows, as well as through an API. ALE says it encrypts service connections and call media, and that Rainbow follows applicable privacy laws including GDPR and CCPA. The service lists ISO 27001 certification and European certifications or approvals including ACN, C5, ENS, and CSPN. Individual use has a free plan; business subscription pricing is available on request.