WhatsApp API by Retention Stack

What it does

A REST API for sending WhatsApp messages, images, files, and OTPs from any app. No WhatsApp Business verification. No Meta approval. Free plan on RapidAPI. First message in under 5 minutes.

• 
  Zernio WhatsApp APIJun 2026 · zernio.com · ▲362

  One API for WhatsApp: messaging, calling, and AI agents

• 
  Vepaar2024 · ▲228

  Stop juggling between salesforce and WhatsApp

• 
  SendAPIMar 2026 · sendapi.co · ▲2

  The Multichannel Messaging API for WhatsApp, SMS & Email.

• 
  Whatsapp Quick Messages2019 · ▲94

  Send Whatsapp messages without having to save the number

• 
  API of Messenger28d ago · api2whats.com · ▲3

  Reliable WhatsApp Business API for developers and businesses

• SW
  Simple WhatsApp API (Open Source)Sep 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

• 
  Dograh▲592

  The open source VAPI alternative

  Dev tools · 26d ago · dograh.com

• 
  Meridian▲530

  Don't let your work go unnoticed. Get promoted!

  Dev tools · 21d ago · meridiona.com

• 
  x1▲516

  Lovable for iPhone apps go from idea to App Store

  Dev tools · 12d ago · x1.new

• 
  Computable GPU Index (CGI)▲423

  The first open-source price index for GPU compute

  Dev tools · 10d ago · getcomputable.com

• 
  Open-Source eInk Bike Computer▲406

  OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.

  Dev tools · 2d ago · opentrailpaper.com

• 
  The GTM Co-Founder▲402

  Open-source GTM skills for technical founders

  Dev tools · 30d ago · gtmcofounder.com

• 
  Lightfield▲891

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

  AI · Mar 2026 · lightfield.app

• 
  Tobira.ai▲730

  A network where AI agents find deals for their humans

  AI · Mar 2026 · tobira.ai

• 
  Claude Import Memory▲725

  Switch from ChatGPT to Claude with import memory feature

  AI · Mar 2026 · claude.com

• 
  Littlebird▲712

  The AI assistant that already knows your work

  AI · Mar 2026 · littlebird.ai

• 
  Viktor.com▲701

  Your AI Coworker that proactively executes tasks

  AI · Mar 2026 · viktor.com

• 
  Jupid▲664

  File your taxes with Claude Code

  Commerce · Mar 2026 · jupid.com