Company brain software is a category of tool that turns scattered company knowledge into one live, queryable knowledge graph — people, projects, tools, decisions and AI agents, all linked. Unlike a wiki or a vector database, it is built to be read and written by AI directly: any model can search it through the Model Context Protocol and get answers that carry their source. Think of it as a second brain for companies that machines, not just humans, can use.
What company brain software actually is.
Company brain software is the layer between your knowledge and everything that needs it. It ingests your docs, tools and teams, links them into a typed graph, and exposes that graph to both people and AI through one interface.
The defining trait isn't storage — wikis and drives already store things. It's that the knowledge is queryable by machines. An AI brain software gives any model a structured way to ask "what do we know about X, and who owns it?" and get a real, sourced answer.
- +One graph that links people, projects, tools and decisions
- +Read and written by AI, not just humans
- +Every answer carries provenance back to a source note
Why a growing company needs one.
Below a certain size you can keep the company in your head. Past it, knowledge fragments across Notion pages, Slack threads, repos and a dozen AI tools — each holding a slice, none holding the map.
A wiki documents the past for humans to read. A vector DB powers one retrieval feature. Company brain software is the category that does the missing job: keep a living model of how the whole company connects, and let every tool and agent draw on it.
What to look for when you evaluate.
Most tools that claim to be a company brain are a search box bolted onto a database. The questions that separate real company brain software are about openness, AI access and economics, not feature lists.
Score every option against five things: is your data portable, can any AI query it, does retrieval combine signals, can you see what your agents cost, and does it govern access as you grow?
- +Open format you can leave with — or proprietary lock-in
- +Queryable by any AI via an open protocol — or one vendor's app
- +Hybrid retrieval and per-agent cost visibility built in
Company brain software, done right.
Fleece is company brain software built to the open standard, not around it. The brain is a folder of plain markdown — YAML and [[wikilinks]], 100% Obsidian-compatible — that lives on your own infrastructure, local-first, with optional cloud sync encrypted end-to-end.
Any AI that speaks MCP queries it through ten tools, hybrid search blends keyword, semantic and graph, and a live map shows every agent, owner and run-rate. It scores well on its own buyer's guide because it was designed against it.
What to expect from real company brain software.
AI-queryable by design
Ten JSON-RPC tools let Claude Desktop, Cursor, Cline, Zed or any custom agent read and write the brain through MCP — no vendor lock-in.
Hybrid retrieval
Keyword, semantic and graph traversal ranked together, returning real notes with their source — a median 34 ms per query.
Open markdown vault
100% plain .md with YAML and [[wikilinks]], Obsidian-compatible. The same folder opens in any editor, so you can always walk away with your data.
Live AI org map
Every agent, tool and person on one graph, with per-agent cost — model, token spend, run-rate and owner — visible at a glance.
Local-first, encrypted
The brain runs on your infrastructure. Cloud sync is optional and end-to-end encrypted with AES-256-GCM. Nothing is forced into a vendor cloud.
Governance that scales
RBAC, audit logs and SSO so a second brain for companies grows from one founder to a whole org without losing control.
Company brain software — common questions.
What is company brain software?+
It's a category of tool that turns a company's scattered knowledge into one live, queryable knowledge graph linking people, projects, tools, decisions and AI agents. Its defining feature is that AI can read and write it directly — any model queries it through the Model Context Protocol and gets sourced answers.
How is company brain software different from a wiki or Notion?+
A wiki or Notion stores pages for humans to read and search by hand. Company brain software links knowledge into a graph that machines query: it's built so any AI agent can ask a structured question and get a sourced answer, and it tracks how every tool, person and decision connects — not just the documents.
Do we need a company brain if we already have a vector database?+
A vector database powers one retrieval feature — embeddings and similarity search. Company brain software is the broader category: it adds a typed graph, hybrid keyword + semantic + graph retrieval, the agent and owner map, and per-agent cost on top. The vector DB becomes one signal inside it, not the whole system.
What should I look for when choosing company brain software?+
Five things: an open, portable data format so you're never locked in; queryability by any AI through an open protocol like MCP; hybrid retrieval rather than a single search method; visibility into what each agent costs; and governance — RBAC, audit logs, SSO — that scales as you grow.
How much does company brain software cost to try?+
Fleece starts at €12/mo for Solo, €24/mo for Pro and €49/user/mo for Teams, with a 14-day trial and no card required. You can connect your first sources and have AI querying shared memory within an afternoon.
One category. One company brain.
Stop bolting search onto another database. Choose company brain software your whole stack — human and AI — can actually query.