“Let's talk about some open source
platforms to build a chatbot…………”
CHATBOT

1. Dialogflow
Features:-
Fast Coding.
Machine Learning Powered.
Natural Conversations.
Small Talk.
Intents.
Entities.
Multi-Lingual Agent Support.
Integrations.
Analytics.
In-Line Code Editor.
Cross Platform Support

Easily integrates with:-
Facebook Messenger.
Viber.
Google Assistant.
Cisco Spark.
Twitter.
Telegram.
Slack.
Twilio.
API interactions(using writing your own code).
Skype

Disadvantages:-
To do simple math logic you have to write code.
You cannot use regular expressions when matching intents.
Clickable links in the web based chat box cannot be created.
You cannot download the training data.
You cannot search across all the intents you create.

2. Snatchbot
Building chatbot using visual flow editor.
Features:-
Picking from pre-defined bot templates.
Storing user‘s data.
Picking the best answer using AI.
Sending attachments in bot messages.
Setting up keyword auto responses.
Enabling your bot to send an email notification.
Setting up multilingual chatbot.
Creating a custom link to your bot.
Chatting with users directly inside the chatbot platform.

Disadvantages:-
One lacking point is NLP. It does have
Natural Language Processing (NLP) but that
is not as powerful as Dialogflow.

Easily integrates with:-
 Messenger, Telegram, WhatsApp
LiveChat
Slack
WordPress
Shopify
Twillio
MailChimp
Google Sheets
Intercom
Skype
Zapier
Stripe

3. Chatfuel
API .
Features:-
Contact History .
Customizable Branding .
Picking the best answer using AI.
Email Integration .
Sending attachments in bot messages.
Knowledge Base .
Multi-Channel Communication .
Prioritizing.
Real Time Monitoring .
Social Media Integration.
Third Party Integrations.
Setting up multilingual chatbot.
Monitoring.

Easily integrates with:-
Messenger
Google Sheets
WordPress
Zapier
Stripe
Shopify
LiveChat
Slack
Skype
Intercom
Twillio
WhatsApp

Support for branching, variable operations
& non-linear conversations is poor or absent.
Disadvantages:-
No support for subroutines, jumping around a
conversation etc.
NLP is limited.
Support is limited. There’s a community board.
Poor documentation.