NowSMS vs Ozeki SMS Gateway

NowSMS is a content delivery server for SMS and MMS that can serve as a message hub, operator MMSC, SMPP proxy, email gateway, and two-way application interface. It connects to SMS services through SMPP, HTTP, UCP/EMI, CIMD2, GSM modems, or Android phones, and supports MMS protocols MM1, MM3, MM4, MM7, and EAIF. Messages can be routed among SMS connections by destination patterns for least-cost routing. Applications can connect through HTTP, SMPP, SMTP, or MM7; sample APIs are available for PHP, Java, and command-line use. Its MMSC supports OMA MMS versions 1.0–1.3 and 3GPP MMS versions 5.3.0–6.13.0, with content adaptation and conversion. NowSMS is listed for Android, Linux, macOS, Windows, web, API, and self-hosted use. The Modem Edition costs £370, paid once, and server software has a free 30-day trial. Sending messages requires an SMS provider connection, GSM modem, or Android phone. Documentation, a PDF manual, and a discussion forum with free support for trial users are available.

Ozeki SMS Gateway is on-premises software for businesses that send SMS from an office, automate messaging, or provide SMS services to customers. It sends and receives messages through modems, Android phones, and protocols including SMPP, UCP/EMI, CIMD2, OZX, HTTP/REST, SIP, and Modbus/SNMP. Routing options include least-cost and backup routing, load balancing, copying, and modifying messages. Applications can connect through REST, SOAP, JSON, WebSocket, SDKs, SQL polling, and integrations such as databases, Excel, email, FTP, and text files. The gateway can run on physical or virtual servers, cloud platforms, or an Android phone. Listed security controls include HTTPS, TLS/SSL for supported protocols, encrypted password storage, and logs that can hide phone numbers and message text. A free trial is available, but there is no free plan. Licenses are one-time purchases; listed plans range from €1,490, paid once to €79,990, paid once. SMS provider charges may also apply.