Which workflow are you replacing?
Supermemory offers memory and document APIs, hosted MCP, and shared spaces. Its MCP includes read, save, forget, and interactive editable-draft workflows. It is not limited to silently capturing material that a person cannot inspect or change.
mem0 and Zep are relevant when you want API-driven memory and retrieval. Hjarni fits when you want Markdown source notes, nested folders, edit history, and shared team roles. These are differences in the working interface and data model, not exclusive rights to human authorship.
Verify retrieval with your own material
Test each candidate with representative documents, permissions, and questions. A saved item being present does not guarantee a model will retrieve it for every prompt. Hjarni uses full-text search across notes and exposes the same notes through its UI and tools, but that architecture is not a guarantee that retrieval or model answers will always be correct.
Check hosting and export directly
Do not infer a storage region from a company’s headquarters. Supermemory documents plan-dependent deployment options, including self-hosting on higher tiers. Hjarni’s hosted notes run in Germany. Confirm the deployment, subprocessors, and contract that apply to your account.
Hjarni’s standard Markdown ZIP includes active notes and attachments. Supermemory exposes document operations through APIs; check the export format and any migration procedure you require rather than assuming a Markdown ZIP or complete app transfer.
When to stay on Supermemory
Keep Supermemory if its capture, shared spaces, APIs, and retrieval fit the work you do. Choose Hjarni if your preferred interface is a managed Markdown library with nested folders, folder instructions, and shared team roles for connected assistants.