Yes, both Osschat and Feyn offer a Free Trial.
Pricing details for both Osschat and Feyn are unavailable at this time. Contact the respective providers for more information.
Osschat offers several advantages, including Open-source software, Documentation as a knowledge base, Includes issues and blog posts, Community Q&A integration, Targeted at developers and many more functionalities.
The cons of Osschat may include a Dependent on Zilliz database service, No multi-language support mentioned, Lacks advanced moderation tools, Document organization may be lacking. and No security features mentioned
Feyn offers several advantages, including Named after Richard Feynman, Accessible through Twitter, Acts as personal assistant, Interactive through chat, NLP capabilities and many more functionalities.
The cons of Feyn may include a Only accessible through Twitter, No offline mode, May misunderstand user instructions, Reliant on user's internet connection. and Not specifically targeted for professional use