Gammu SMSD
Gammu SMSD: A free, open-source choice for modem-based inbound and outbound SMS automation. Ranked #29 of 36 in SMS Gateway Software by our editors (6.1/10); pricing: Free plan; best for free modem-based SMS automation.
At a glance
- Editor score6.1 / 10
- PricingFree plan
- Best forFree modem-based SMS automation
- Free planYes
- Paid fromFree
- Two-way messagingYes
- Facts checked20 Sep 2026
Where it wins
- Free and open source for self-hosted deployments
- Supports inbound SMS, queued sending, and delivery reports
- Connects with SQL databases, C, Python, and custom programs
Where it doesn't
- Requires compatible GSM modem or phone hardware
- More daemon- and modem-focused than a multi-protocol gateway
- Requires configuration of storage, modems, and SMS workflows
Our verdict on Gammu SMSD
Gammu SMSD is a free, open-source, self-hosted daemon for sending and receiving SMS through compatible GSM modems or phones. It periodically scans a modem for incoming messages and sends messages placed in configured storage. Developers and system administrators can use it to build modem-based SMS workflows, including two-way messaging, delivery-status tracking, and integrations with custom software.
Its strongest fit is a deployment that needs direct control over message handling and storage. SMSD can store messages in files or SQL-backed systems, including MySQL, PostgreSQL, SQLite through DBI, ODBC databases, and other supported database systems. It also supports multiple modem instances through PhoneID, provides command-line tools for message injection and daemon-status monitoring, and can run custom programs after receiving messages. C and Python interfaces add options for message injection and status access.
Gammu SMSD is more focused than a broad, multi-protocol SMS gateway. It depends on compatible GSM modem or phone hardware, so it suits teams prepared to manage that infrastructure and configure the daemon around it. The published product details describe a free open-source distribution as part of Gammu rather than subscription tiers. Choose SMSD when self-hosting, modem connectivity, queues, inbound processing, and database-backed workflows are priorities. An alternative may be a better fit for organizations seeking a hosted service or a gateway centered on multiple communications protocols rather than GSM modem control.
Your product? Our editors can test Gammu SMSD in depth and publish a review, labelled as paid · from $149/mo →
Gammu SMSD pricing
Gammu SMSD fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Two-way messaging | Yes |
| Delivery reports | Yes |
| Inbound SMS | Yes |
| Contact management | Not verified |
| API access | Yes |
| Included user seats | Not verified |
| Deployment | Self-hosted |
| Platforms | Windows, Linux |
| Support | Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 7 integrations: MySQL, PostgreSQL, SQLite, ODBC, libdbi, Microsoft Access … |
| Pricing | Free plan |
| Website | wammu.eu |
| Facts checked | 20 Sep 2026 |
Gammu SMSD integrations
Gammu SMSD lists 7 integrations on its own site.
- MySQL
- PostgreSQL
- SQLite
- ODBC
- libdbi
- Microsoft Access
- Oracle
Alternatives to Gammu SMSD
- CM.com SMSA mature SMS gateway for two-way messaging, analytics, APIs, and business integrations.9.3
- Sinch EngageA broad engagement platform for marketing teams, with higher entry pricing than basic gateways.9.1
- TextmagicA messaging platform for permission-based SMS operations beyond basic gateway connectivity.8.8
See all Gammu SMSD alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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