Transparency alternatives to Zello
Other Mass notification and critical events vendors we measure, sorted by how much they publish that Zello does not. This is a comparison of disclosure, not of features or fitness.
12 shown of 38 that differ from Zello on at least one criterion we measured for both. Public transparency score, not a product or security rating.
Zello has 7 gaps in what we could measure: Subprocessor list, Data location stated, Status page with history, Uptime SLA with a figure, No third-party tracking before consent, Notice before subprocessors change, Named privacy contact. The column “publishes and Zello does not” is the one that closes them.
| Vendor | Score | Publishes, and Zello does not | Zello publishes, and they do not | |
|---|---|---|---|---|
| Singlewiresinglewire.com | 43/100 | 4 Subprocessor list, Status page with history, Uptime SLA with a figure, +1 | 4 Data processing agreement, Public pricing, Certifications named, +1 | Compare |
| AlertMediaalertmedia.com | 52/100 | 3 Subprocessor list, Status page with history, Notice before subprocessors change | 2 Data processing agreement, security.txt (RFC 9116) | Compare |
| Juvarejuvare.com | 35/100 | 2 Subprocessor list, Data location stated | 4 Data processing agreement, Public pricing, Certifications named, +1 | Compare |
| F24f24.com | 30/100 | 2 Data location stated, Named privacy contact | 3 Data processing agreement, Public pricing, security.txt (RFC 9116) | Compare |
| Divera 247divera247.com | 26/100 | 2 No third-party tracking before consent, Named privacy contact | 3 Data processing agreement, Public pricing, Certifications named | Compare |
| GroupAlarmgroupalarm.com | 26/100 | 2 Status page with history, Named privacy contact | 3 Data processing agreement, HTTPS enforced with HSTS, security.txt (RFC 9116) | Compare |
| Omnilertomnilert.com | 17/100 | 2 Data location stated, Named privacy contact | 5 Data processing agreement, Public pricing, Certifications named, +2 | Compare |
| D4Hd4h.com | 26/100 | 1 Data location stated | 3 Data processing agreement, Public pricing, security.txt (RFC 9116) | Compare |
| IamRespondingiamresponding.com | 23/100 | 1 Data location stated | 4 Data processing agreement, Certifications named, HTTPS enforced with HSTS, +1 | Compare |
| Active911active911.com | 22/100 | 1 Data location stated | 4 Data processing agreement, Certifications named, HTTPS enforced with HSTS, +1 | Compare |
| Agility Recoveryagilityrecovery.com | 22/100 | 1 Data location stated | 4 Data processing agreement, Public pricing, Certifications named, +1 | Compare |
| Mobile Text Alertsmobile-text-alerts.com | 22/100 | 1 Named privacy contact | 3 Data processing agreement, Certifications named, security.txt (RFC 9116) | Compare |
Only criteria we could measure for both are counted. Where we could measure one and not the other, the row is silent: that would be a statement about our measurement, not about either vendor. Every single result with its source is on the two profiles.