Obsidian
Obsidian is a popular personal knowledge base built on local Markdown files. Engram is also file-first and Markdown-based, but the focus differs.
| Dimension | Engram | Obsidian |
|---|---|---|
| Purpose | AI-agent memory protocol | Personal knowledge base |
| Routing | Graph-aware task routing into agent context | Manual linking and search |
| Approval | Human approval gate before durable writes | Human authors directly |
| Agent integration | Skill files, slash adapters, MCP, hooks | None built-in |
| Best fit | teams using AI agents that need durable, routed memory | individuals building a linked note graph |
Use both: Engram for agent-facing durable memory, Obsidian for personal knowledge. Both are Markdown and Git-friendly.