Local-first · AI-assisted · In your control

WhatsTant — A WhatsApp assistant for international sales

Add an AI sidebar beside WhatsApp Web to understand customers, write better replies, and remember every follow-up. Your chats and customer records stay on your own computer.

v2.0.0 · size unknown · Aug 28, 2026

Download for Intel Mac

Windows · macOS Apple Silicon · macOS Intel

Free to use. AI features require your own model API key.

Independent third-party software. WhatsTant is not affiliated with, endorsed by, or an official product of WhatsApp or Meta. WhatsApp is a trademark of WhatsApp LLC.

Your daily workflow

From understanding a conversation to remembering what comes next

Let AI handle the repetitive organization while you own the judgment and the relationship.

Chat summaries and customer profiles

Summarize long conversations and organize customer concerns, quote progress, and action items. A new owner can get up to speed in seconds.

Purchase intent analysis

AI scores intent, identifies interests, and suggests next steps so you can follow up with the strongest opportunities first.

Translation and quick replies

Translate incoming messages instantly, write in your customer's language, insert saved replies, and ask AI for a draft.

Follow-up reminders

Set a follow-up time for each customer and get reminded when it is due. “Let's talk next week” no longer slips away.

Multiple accounts and teams (optional)

Switch between WhatsApp accounts in one window. Self-host sync to share records across team computers, and connect your CRM through the public contract.

Local-first

Your data stays in your hands

All data is stored locally in ~/.whatstant. AI requests go directly to the provider you choose using your own key. Nothing is uploaded unless you configure cloud sync. There is no account system and no telemetry.

Supported models

  • Claude (Anthropic)
  • OpenAI
  • Google Gemini
  • DeepSeek
  • Kimi (Moonshot AI)
  • GLM (Zhipu AI)
  • OpenRouter
  • opencode Zen

Translation can use a separate Gemini configuration.