# Outbound and sales calling: compare vendors

There are 4 outbound and sales calling vendors in the index.

4 voice AI vendors. Also on the [web page](https://voiceagents.fyi/in/global/online/category/outbound-sales-calling).

## Voice AI vendors

1. [Ringg AI](https://voiceagents.fyi/in/global/online/ringg-ai.md), Voice agent platforms, Online: Platform to build multilingual AI agents for inbound and outbound calls, chat, WhatsApp and web.
2. [CallHippo](https://voiceagents.fyi/in/global/online/callhippo.md), Outbound and sales calling, Online: Business phone system with outcome-based AI voice agents and parallel dialer.
3. [RevRag AI](https://voiceagents.fyi/in/global/online/revrag-ai.md), Outbound and sales calling, Online: In-app and calling AI agents for BFSI onboarding and conversions.
4. [SquadStack](https://voiceagents.fyi/in/global/online/squadstack.md), Outbound and sales calling, Online: Voice AI agents for sales in India, handling calls in 9 Indian languages.

## Other categories in Online

- [Contact-centre voice AI](https://voiceagents.fyi/in/global/online/category/contact-center-voice-ai.md): 7 voice AI vendors
- [Voice agent platforms](https://voiceagents.fyi/in/global/online/category/voice-agent-platforms.md): 5 voice AI vendors
- [AI receptionists](https://voiceagents.fyi/in/global/online/category/ai-receptionists.md): 3 voice AI vendors
- [Voice AI APIs](https://voiceagents.fyi/in/global/online/category/voice-ai-apis.md): 2 voice AI vendors
- [Open-source voice frameworks](https://voiceagents.fyi/in/global/online/category/open-source-voice-frameworks.md): 1 voice AI vendor