Zultys vs RingCentral
The advisor verdict
RingCentral is the polished cloud-only leader; Zultys is the deployment-flexibility pick — the same MX platform runs cloud, on-prem or hybrid, ideal for staged migrations or compliance-driven on-prem needs. Standard cloud UC → RingCentral. Deployment control and phased moves → Zultys.
At a glance
| Zultys | RingCentral | |
|---|---|---|
| Starting price (list) | from about $27 per user/month (typical partner quote) | from about $20–30 per user/month (list, annual billing) |
| Pricing model | Per-user licensing, quote-based via channel | Per-user monthly subscription, annual or monthly billing |
| Best segments | Small business, Mid-market | Small business, Mid-market, Enterprise |
| Founded | 2001 | 1999 |
| Headquarters | Sunnyvale, California | Belmont, California |
Zultys is best for
Zultys suits organizations needing cloud/on-prem/hybrid options from one platform.
RingCentral is best for
RingCentral suits cloud-first teams that want the deepest feature set and integrations.
Feature comparison
| Feature | Zultys | RingCentral |
|---|---|---|
| Cloud / on-prem / hybrid MX platform | ✓ | — |
| Unified apps (mobile/desktop) | ✓ | — |
| Contact center basics | add-on | — |
| Multi-site networking | ✓ | — |
| Teams interop | add-on | — |
| Cloud PBX & auto-attendant | — | ✓ |
| Unlimited US/Canada calling | — | ✓ |
| Team messaging (chat/SMS) | — | ✓ |
| Video meetings | — | ✓ |
| Contact center (RingCX) | — | add-on |
| AI call summaries & transcription | — | higher tiers |
| Desktop | — | ✓ |
Feature availability varies by plan tier; full snapshots on the Zultys review and RingCentral review.
Pros & cons
Zultys
- Same platform deploys cloud, on-prem or hybrid
- Strong multi-site and contact center basics
- Predictable per-user licensing
- Long-tenured stability
- Cloud-native rivals ship innovation faster
- Channel-led pricing with little published data
RingCentral
- Mature, reliable platform with strong uptime track record
- Deep integrations (Microsoft 365, Google Workspace, Salesforce, HubSpot)
- True global availability with local numbers in 100+ countries
- RingCX contact center option under the same roof
- Higher list pricing than most mid-market rivals
- Quote-heavy sales process; published list price rarely the final price
Our recommendation
RingCentral is the polished cloud-only leader; Zultys is the deployment-flexibility pick — the same MX platform runs cloud, on-prem or hybrid, ideal for staged migrations or compliance-driven on-prem needs. Standard cloud UC → RingCentral. Deployment control and phased moves → Zultys.
Comparison is editorial and independent. Pricing references published list rates as of September 2026 and changes frequently. Vendor names are trademarks of their respective owners; The VoIP Advisors is independent and not affiliated with either vendor.