SMS DEV

SMS DEV

SMS for Developers

12 followers

Resend for SMS. SMS DEV is a free, open-source SMS development tool that lets you build & test messaging apps with zero costs. Beautiful web UI and works with any stack. Built by the Relay team for the soon-to-be launched Relay SMS stack. No number provisioning, no Twilio. Simple local SMS development tools.
SMS DEV gallery image
SMS DEV gallery image
SMS DEV gallery image
SMS DEV gallery image
Free
Launch tags:Messaging•API•Developer Tools
Launch Team / Built With
Anima Playground
AI with an Eye for Design
Promoted

What do you think? …

Daniel Dewar
Hey PH! I built SMS DEV after getting stuck in a testing loop with Twilio and burning through credits. I started out making a better SMS dev tool and while that's still in development, that I'd ship this little app. Every developer I talked to had the same story - expensive testing, complex setups, and teams juggling multiple phone numbers. What makes SMS DEV unique? Unlike other SMS testing tools that focus on just sending messages, SMS-dev creates a complete local SMS environment. You get a web UI for managing conversations, full webhook simulation, and it's drop-in compatible with the soon-to-be launched Relay API - so switching between dev and production will be seamless. What I'm most proud of? The bundled architecture. Getting a full Next.js UI to bundle directly into a CLI tool was technically challenging (for me) but it means devs can get a rich web interface with zero configuration. No separate servers, no complex setup - just npm install and you're testing SMS flows. The testing response has been incredible. It's being used by the engineering team I lead at UM. Try it out and let me know what you think. Dan
Erliza. P

📱💻 SMS DEV is LIVE!

SMS API built for developers:

✅ Send/receive SMS with 3 lines of code

✅ Global carrier coverage (200+ countries)

✅ Free test numbers & 100 test credits

Integrate SMS in minutes → [link] #BuildWithSMS

Daniel Dewar

583 package downloads already :)