Yes, both Osschat and SecondBrain.fyi offer a Free Trial.
The starting price of SecondBrain.fyi begins at $19/month, while pricing details for Osschat are unavailable.
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
