Head-to-head · SMS Gateway Software
Diafaan SMS Server vs Ozeki SMS Gateway
Diafaan SMS Server leads on 0 checks, Ozeki SMS Gateway on 1, and 6 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreDiafaan SMS Server · 7.2/10
- Free trialonly Diafaan SMS Server
Diafaan SMS Server scores higher on our rubric for sms gateway software: 7.2 against 6.3 out of 10; our editors rank them #18 and #27.
Ozeki SMS Gateway leads on included user seats: 10 versus 1.
Diafaan SMS Server is the better fit for windows teams needing a complete SMS server. Ozeki SMS Gateway is the better fit for high-throughput Windows/Linux SMS operations.
- Diafaan SMS Server fits best
Windows teams needing a complete SMS server
- Ozeki SMS Gateway fits best
High-throughput Windows/Linux SMS operations
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Side by side
| Feature | Diafaan SMS Server 7.2/10 Visit ↗ | Ozeki SMS Gateway 6.3/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 7.2 | 6.3 |
| Ranking | #18 in SMS Gateway Software | #27 in SMS Gateway Software |
| Best for | Windows teams needing a complete SMS server | High-throughput Windows/Linux SMS operations |
| Pricing model | Paid | Paid |
| Starting price | $195 one-time | — |
| Free plan | — | — |
| Free trial | 30 days | — |
| Deployment | Self-hosted, Desktop | Cloud, Self-hosted, Mobile |
| Platforms | Windows | Web, Windows, Linux, Android |
| Support | Email, Community, Docs | Email, Live chat, Phone, Tickets, Docs |
| Integrations | 13 integrations | 14 integrations |
| Built for | Small business, Mid-market, Enterprise | Small business, Mid-market, Enterprise |
| Features Diafaan SMS Server 5/5 · Ozeki SMS Gateway 5/5 | ||
| Two-way messaging | ✓ | ✓ |
| Delivery reports | ✓ | ✓ |
| Inbound SMS | ✓ | ✓ |
| Contact management | ✓ | ✓ |
| API access | ✓ | ✓ |
| Specs | ||
| Included user seats | 1 | 10 (best) |
| Our review | ||
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| Our verdict | Diafaan SMS Server is Windows software for professional users and companies that need to send and receive SMS through GSM/3G/CDMA modems, Android phones, SMPP accounts, or supported HTTP SMS services. It combines messaging, contact and… Read the review → |
Ozeki SMS Gateway is installable software for businesses, SMS service providers, aggregators, mobile operators, and office teams that need to send and receive SMS. It runs on Windows or Linux servers and can be deployed on physical,… Read the review → |
Strengths and trade-offs
Diafaan SMS Server — where it wins
- Supports GSM, SMPP, and HTTP SMS connections
- Includes two-way messaging, inbound SMS, and delivery reports
- Offers web management, APIs, SQL storage, and email workflows
Where it doesn't
- Runs only on Windows
- The Light edition supports one gateway and one connector
- Higher editions require larger one-time investments
Ozeki SMS Gateway — where it wins
- Supports HTTP, SMPP, UCP, CIMD2, email, database, and modem connections
- Scales from 5 messages per minute to 50 messages per second
- Includes routing, delivery reports, SQL reporting, and credit limits
Where it doesn't
- Starting price is 1,490 EUR as a one-time license fee
- Lower tiers limit throughput, provider connections, or user counts
- The broad feature set may exceed the needs of simple SMS sending
- Diafaan SMS Server7.2/10 · 30-day trial
A flexible Windows SMS server with modem, SMPP, HTTP, API, and two-way messaging support.
Visit DiafaanFull verdict → - Ozeki SMS Gateway6.3/10 · Paid
A broad, high-throughput SMS gateway with substantial upfront licensing costs.
Visit OzekiFull verdict →
All SMS gateway software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update