Developer Tools·Standings
SMS API Services
SMS API services send text messages through software; the choice turns on the API connection and messaging features your workflow needs.
Use the comparison fields to check free plans, paid starting details, two-way SMS, inbound webhooks, MMS, short codes, toll-free numbers and SDK languages. Platform labels show where a service runs, such as API, web, Android, iOS, self-hosted or Linux.
- 35 platforms
- 3 with a public API on this page
- 13 with a free tier
- Checked 28 Sept 2026
- 1 IS
Infobip SMS APIinfobip.comA web and API service for two-way SMS with a 60-day trial and free plan.
- 2 M
Messentemessente.comWeb and API messaging service supporting two-way texts, inbound webhooks, and short codes.
- 3 SA
SMSGlobal APIsmsglobal.comAPI and web service for two-way texting and picture messages, with webhooks and a free plan.
- 4 BMBandwidth Messaging APIbandwidth.com
Messaging platform with two-way texts, picture messages, short codes, and inbound webhooks.
- 5 CS
Clickatell SMS APIclickatell.comA web and API service for two-way SMS with inbound webhooks, a free plan, and trial.
- 6 G
Gupshupgupshup.aiA web and API platform with multichannel messaging and a visual flow builder.
- 7 JSJasmin SMS Gatewaydocs.jasminsms.com
A free, open-source Linux gateway for two-way SMS over HTTP or SMPP.
- 8 TTTelnyx Text-to-Speech APItelnyx.com
Speech tool that turns text into audio, with cloned voices and commercial use.
- 9 VSVonage SMS APIvonage.com
SMS platform for web, mobile, and API use with webhooks and short codes; MMS is not supported.
- 10 CS
ClickSend SMS Gateway APIclicksend.comAn SMS service for web, API, iOS, and Mac, with MMS, webhooks, and a 14-day trial.
- 11 MMSG91msg91.com
Cloud messaging service with SMS, WhatsApp and other channels, plus delivery tracking and OTP tools.
- 12 TP
Twilio Programmable Messagingtwilio.comA web and API service for sending and receiving SMS, with a 30-day trial.
- 13 SS
Sinch SMS APIsinch.comAn API for two-way SMS with inbound webhooks and a free trial.
- 14 CC
CM.com Business Messaging APIcm.comAn API service for two-way SMS, with a free trial and pricing on request.
- 15 PS
Plivo SMS APIplivo.comA web and API service for two-way SMS, with pricing from $0.01 and a free trial.
- 16 KKannelkannel.org
A free, open-source Linux gateway for SMS, WAP, and two-way messaging.
- 17 T
TextBeetextbee.devAn open-source Android SMS gateway with a web app, API, two-way texts, and webhooks.
- 18 M
MoceanAPImoceanapi.comA web and API SMS service with plans from $3 per month and a free trial.
- 19 T
Textbelttextbelt.comSMS sending service with API and self-hosted options; it does not support replies or MMS.
- 20 SSMSGatewayHubsmsgatewayhub.com
Messaging platform for bulk SMS and other channels, with route retries and real-time delivery reports.
- 21 TS
Telnyx SMS APItelnyx.comA web and API service for two-way SMS with inbound webhooks.
- 22 S
SMSAPIsmsapi.comPaid messaging service for Android, iOS, websites, and APIs, with a free trial.
- 23 G
GatewayAPIgatewayapi.comMessaging platform for sending SMS, RCS and email worldwide through APIs.
- 24 CA
Celcom Africa SMS APIcelcomafrica.comSMS API for bulk texts, delivery reports and balance checks; fees apply only to SMS credits used.
- 25 MMittomitto.ch
A web and API service for two-way SMS with inbound webhooks and a free trial.
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How to choose
Which platforms does it need to run on?
Choose a service with the platform access your workflow requires. API and web access support software and browser use, while Android, iOS, self-hosted and Linux labels address other deployment needs.
Check the SDK languages listed for the service so your team can connect it without changing its application stack.
Does it support the message types and numbers I need?
Confirm support for two-way SMS, MMS, short codes and toll-free numbers before choosing a service.
Two-way SMS handles replies, MMS adds media, short codes use dedicated short numbers, and toll-free numbers provide a non-local number option.
Can it send inbound events to my app?
Look for inbound webhooks when your app must receive delivery or reply events. A webhook is an automatic message from the service to an address your app provides.
Compare this field alongside two-way SMS so incoming replies can reach the workflow that sends messages.
What free or paid option should I start with?
Use the free-plan and paid-from fields to set an initial budget. A free plan can support early evaluation, while paid pricing shows the starting commitment listed for a service.
Some listings show pricing on request. ClickSend SMS Gateway API lists a 14-day trial, and Clickatell SMS API is marked with a free plan.
Do I need open-source code?
If you need to read or change the implementation, check the service's open-source mark and licence before selecting it.
The board also shows whether a free trial is available, which can help you assess fit without treating a trial as a continuing free plan.
Questions
What does an SMS API service do?
It lets software send and receive text messages through an API, with options such as two-way SMS, inbound webhooks, MMS, short codes and toll-free numbers.
Which SMS APIs have a free plan?
The comparison includes a free-plan field. Clickatell SMS API is marked yes; check the current listing for other services and terms.
Can SMS APIs receive replies in my app?
Yes, when the service supports two-way SMS and inbound webhooks. A webhook sends an event to an address your app provides.
Do SMS APIs support MMS and toll-free numbers?
Support varies by service. Use the MMS support and toll-free numbers fields to check before choosing.
Are SMS API prices listed or on request?
Both approaches appear. Some listings show a paid starting detail, while Bandwidth Messaging API and Vonage SMS API list pricing on request.
Some top positions on this board can be paid placements, standing where they were sold. The facts on each platform are not for sale. How we rank · Disclosure