# Communication APIs

Ranked by the Vioscale composite score: a confidence-weighted blend of independent signals, not user reviews.

| # | Software | Score | Confidence | Vendor |
|--:|---|--:|---|---|
| 1 | [Agora](https://www.vioscale.ai/software/agora) | 82.7 | 48% (low) | - |
| 2 | [Novu](https://www.vioscale.ai/software/novu) | 77.6 | 64% (medium) | - |
| 3 | [Daily](https://www.vioscale.ai/software/daily) | 77.3 | 62% (medium) | - |
| 4 | [Stream](https://www.vioscale.ai/software/stream) | 73 | 62% (medium) | - |
| 5 | [Plivo](https://www.vioscale.ai/software/plivo) | 72.9 | 62% (medium) | - |
| 6 | [Bird](https://www.vioscale.ai/software/bird) | 72.5 | 30% (low) | - |
| 7 | [Mailgun](https://www.vioscale.ai/software/mailgun) | 69 | 49% (low) | - |
| 8 | [Twilio](https://www.vioscale.ai/software/twilio) | 67.8 | 25% (low) | - |
| 9 | [Postmark](https://www.vioscale.ai/software/postmark) | 66.9 | 29% (low) | - |
| 10 | [Sinch](https://www.vioscale.ai/software/sinch) | 66.7 | 64% (medium) | - |
| 11 | [Telnyx](https://www.vioscale.ai/software/telnyx) | 66.5 | 48% (low) | - |
| 12 | [Bandwidth](https://www.vioscale.ai/software/bandwidth) | 62.6 | 63% (medium) | - |
| 13 | [Resend](https://www.vioscale.ai/software/resend) | 62.4 | 46% (low) | - |
| 14 | [LiveKit](https://www.vioscale.ai/software/livekit) | 62.2 | 48% (low) | - |
| 15 | [Courier](https://www.vioscale.ai/software/courier) | 61.1 | 63% (medium) | - |
| 16 | [Infobip](https://www.vioscale.ai/software/infobip) | 58.7 | 29% (low) | - |
| 17 | [SendGrid](https://www.vioscale.ai/software/sendgrid) | 58.4 | 24% (low) | - |
| 18 | [Pusher](https://www.vioscale.ai/software/pusher) | 56.9 | 49% (low) | - |
| 19 | [MailerSend](https://www.vioscale.ai/software/mailersend) | 56.6 | 42% (low) | - |
| 20 | [Amazon SES](https://www.vioscale.ai/software/amazon-ses) | 40.6 | 24% (low) | - |

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*Source: Vioscale (https://www.vioscale.ai/categories/communication-apis).*