
Wit.ai
Dialogflow
Microsoft Bot Framework
Botpress
Amazon Lex
Chatfuel
Jovo
A set of high level APIs for building your own language parser

Mailflow.sh
Stackmail is a webmail service whereby you can log in to your emails from any browser at any time!
Which is more popular?
Based on our record, rasa NLU seems to be more popular. It has been mentioned 27 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | rasa.com | stackmail.com |
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What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Rasa NLU is recommended for businesses and developers who need custom AI solutions with specific domain or language requirements, have technical expertise, and prefer open-source tools. It is also ideal for organizations that prioritize data privacy and wish to host their conversational AI systems on-premises.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Rasa X Tutorial 1: Constructing a Basic AI Assistant
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using rasa NLU and StackMail. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Build your own starting at rasa.com with a free Developer Edition licence and the examples in rasa-community-resources. - Source: dev.to / 1 day ago
Rasa is a strong fit for engineering-focused companies that need complete control over how their chatbot works. It offers deep customization, full access to model pipelines, and enterprise-level security, making it a preferred... - Source: dev.to / 11 months ago
Right before LLMs broke into the scene we had a few techniques I was aware of: * Personality Forge uses a rules-based scripting approach [0]. This is basically ELIZA extended to take advantage of modern processing power. * Rasa [1] used... - Source: Hacker News / over 1 year ago
Tracking StackMail since Aug 2023.
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