Sigma Dialer vs VICIdial
Sigma Dialer
sigmadialer.com
VICIdial
vicidial.comSide by side
| Figure | Sigma Dialer | VICIdial |
|---|---|---|
| Price from | — | $400/mo |
| Free plan | — | Yes |
| Free trial | — | Yes |
| Open source | — | Yes |
| Web | Yes | Yes |
| Linux | — | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 1 | 4 |
| Spec score · Telemarketing | 7.1 (#13) | 8.6 (#3) |
| Spec score · Call Center Software | 7.1 (#107) | 8.8 (#16) |
| API | Sigma lists an open REST API and real-time webhooks for connecting other systems. | A web-based agent API supports remote session control such as click-to-dial, and a separate lead-import API is provided. |
| Digital channel scope | voice_only | voice_plus_digital |
| Inbound calling | Yes | Yes |
| Integrations | The site lists Salesforce, HubSpot, Zendesk, Pipedrive, Slack, Intercom, Snowflake, BigQuery, Segment, Redshift, Twilio, Amazon S3, Databricks, Claude, OpenAI, and webhooks. | Listed add-ons include CRM integrations, VICIphone WebRTC, WordPress, DNC.com, QueueMetrics, Cepstral, Oreka and KHOMP. |
| IVR builder | Yes | Yes |
| Outbound dialer | Yes | Yes |
| Product | Sigma Dialer combines a predictive dialer, inbound ACD, compliance layer, and agent desktop in a cloud platform. | VICIdial is an enterprise-class, open-source contact center suite with a predictive dialer. |
| Support | The site says a named launch engineer supports onboarding and sales responds in under four hours on business days. | The Vicidial Group offers support plans, including 24x7 emergency support, pay-as-you-go services, and free help through its forums. |
Plans
VICIdial
- Free Open-Source DownloadFree
- VICIhost hosting$400 a month
- Additional VICIhost server provisioning$500, paid once
- VICIhost initial provisioning$1,000, paid once
In their own words
Sigma Dialer
Sigma Dialer has no write-up on Specifiction yet; its figures are above.
VICIdial
VICIdial is an open-source contact center suite with a predictive dialer, made by VICIdial, founded in 2007 and based in St. Petersburg, Florida. It handles inbound, outbound, and blended calls, as well as inbound email and website chat through a web-based agent interface. Campaigns can use automatic or predictive dialing, including an adaptive algorithm. Routing features include skills-based ranking, queue prioritization, and callbacks from inbound queues. Campaign tools include agent scripts populated with customer data, scheduled callbacks, call recording, and campaign-specific dispositions. VICIdial lists APIs for agent sessions and lead imports, plus web-based data export utilities. Add-ons include CRM integrations, a WebRTC phone, a WordPress call-me plugin, and QueueMetrics reporting. The agent interface lists 16 languages and allows users to create translations. Compliance features include do-not-call lists, cellphone filtering for TCPA compliance, and GDPR tools. The full VICIbox software can be run on the user's own hardware for free, including in production. VICIhost hosting costs $400 a month per server after the first month; provisioning and call-related charges also apply.