SendAPI

What it does

Send WhatsApp messages, SMS, OTP codes, and transactional email via one REST API. Official Meta Business Partner. 7-day free trial — no credit card required.

SendAPI is a unified messaging API for developers. Send WhatsApp messages, SMS, OTP verification codes, and transactional email from a single REST API endpoint using one API key. Reach 190+ countries by SMS and connect WhatsApp from your own number. SMS usage billed via top-up credits. 7-day free trial on allfrom sendapi.co

• 
  Sent.dm2024 · sent.dm · ▲195

  Unified API for sending messages on SMS, WhatsApp, and more

• 
  WhatsApp API by Retention StackMar 2026 · whatsapp-messaging.retentionstack.agency · ▲1

  WhatsApp messaging API — no Meta approval needed

• 
  Simple WhatsApp API (Open Source)2025 · github.com · ▲15

  Had a Lot of issues with existing APIs especially with Attachment support. Hence built own Whatsapp API. Currently only Send Messages

• 
  Twilio API for WhatsApp2018 · twilio.com · ▲6

  The world’s most popular messaging app through one API

• 
  API of MessengerAug 2026 · api2whats.com · ▲3

  Reliable WhatsApp Business API for developers and businesses

• 
  Soft10 WhatsApp API and Bulk Sender2024 · soft10.io · ▲3

  Simply WhatsApp API and bulk message sender

• 
  /dev/null▲484

  a social network for devs

  Dev tools · 3d ago · dev-null.sh

• 
  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 28d ago · github.com

• 
  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 26d ago · github.com

• 
  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 23d ago · openbot.run

• 
  Talanoa▲346

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 20d ago · talanoa.email

• 
  CoreSpeed▲332

  One MCP for everything your agents need: apps, memory, tools

  Dev tools · 28d ago · corespeed.io

• 
  Lightfield▲901

  AI-native CRM that builds itself and does work for you

  AI · Mar 2026 · lightfield.app

• 
  Tobira.ai▲728

  A network where AI agents find deals for their humans

  AI · Mar 2026 · tobira.ai

• 
  Claude Import Memory▲716

  Switch from ChatGPT to Claude with import memory feature

  AI · Mar 2026 · claude.com

• 
  Littlebird▲709

  Littlebird remembers everything across your meetings, messages, docs, and apps, then takes action so you can recall any detail and never lose context.

  AI · Mar 2026 · littlebird.ai

• 
  Viktor.com▲702

  Your AI Coworker that proactively executes tasks

  AI · Mar 2026 · viktor.com

• 
  Jupid▲659

  File your taxes with Claude Code

  Commerce · Mar 2026 · jupid.com