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About

Ha Tang is a customer support, email and payments platform for Vietnamese businesses and software teams. Its shared inbox brings together Zalo (Official Account and personal), Facebook Messenger, Instagram, TikTok, WhatsApp, email and live chat on websites and in mobile apps. An AI assistant answers from company knowledge, follows situation rules, drafts orders and hands conversations to human agents. The platform matches VietQR bank transfers to orders and issues e-invoices when orders are paid. Its email module supports transactional delivery through a REST API and SMTP, verified domains, inbound email and team groups. Developers can use REST APIs, webhooks, SDKs for Node, Flutter, iOS and Android, and an MCP server. Agents work from a web dashboard and native iOS, Android and macOS apps.

About

Open is a unified AI customer support platform built around Agent 5, a single AI engine shared across every channel and designed to automate and unify support. It brings AI Chat, AI Calls, AI Email, AI Social, Agentic Workflows, and helpdesk integrations into one system so customer conversations can be handled consistently across web chat, phone, email, Instagram, Messenger, WhatsApp, SMS, and existing support tools. Agent 5 goes beyond simple FAQs by handling complex requests, processing returns, updating accounts, coordinating multi-step workflows, routing issues, remembering conversation history, and handing off smoothly to human agents when needed. Web Chat can be embedded with one line of code, customized to match the brand, triggered proactively based on user behavior, and enriched with images, videos, files, links, buttons, forms, cards, and carousels.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Vietnamese online shops, SMBs and app or SaaS teams that sell and support customers on Zalo, Facebook, their website and their own app.

Audience

Customer support teams seeking to automate and unify customer interactions across chat, email, voice, messaging, and outbound channels with AI agents

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

690,000 VND/month
Free Version Supported
Free Trial Supported

Pricing

75¢ per resolution
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Ha Tang
Founded: 2026
Vietnam
hatang.dev

Company Information

Open
Founded: 2025
United States
www.open.cx/

Alternatives

No Alternatives

Alternatives

Zendesk

Zendesk

4.3 out of 5 stars
Freshdesk

Freshdesk

Freshworks
4.6 out of 5 stars
Twilio Flex

Twilio Flex

Twilio
5.0 out of 5 stars

Categories

Categories

Integrations

Facebook Not Supported
Freshdesk Not Supported
HubSpot CRM Not Supported
Instagram Not Supported
Intercom Not Supported
OpenRouter Not Supported
Salesforce Not Supported
Slack Not Supported
TikTok Not Supported
Twilio Not Supported
X (Twitter) Not Supported
Zendesk Not Supported

Integrations

Facebook Supported
Freshdesk Supported
HubSpot CRM Supported
Instagram Supported
Intercom Supported
OpenRouter Supported
Salesforce Supported
Slack Supported
TikTok Supported
Twilio Supported
X (Twitter) Supported
Zendesk Supported
Claim Ha Tang and update features and information
Claim Ha Tang and update features and information
Claim Open and update features and information
Claim Open and update features and information