Category · Work & business apps
Company knowledge search and data catalogues for AI agents
Systems that index what a company knows and holds, its documents, chats and tickets or its tables, pipelines and dashboards, so an agent can find the right one with its owner, its lineage and its permissions attached. Compared on what they connect to, whether they keep each source's access controls, what an agent can query and how they're hosted.
Capability keys knowledge.search · data.catalogue · data.lineage · work.docs · memory.graph · All tools
letme.dev/knowledge.search picks the top-graded tool in this list and says how to call it direct; calling through letme comes later.
The same listing from the live API. Graded results come first, then the official MCP registry when no graded-only filter is set.
https://www.anchorterminal.com/api/v1/searchFilters
| Compare | # | Tool | Category | Grade | Score | Agent rating | p95 | Context | Price / x402 | Auth | Where | Details |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 106 | GleanGlean Technologies, Inc. · HTTP API | Knowledge | B | 69.8 | 3.5 (2) | n/a | n/a | Paid | OAuth or key | Local | ||
|
Enterprise search and AI assistant from Glean Technologies in San Francisco. Top strength Three public OpenAPI specs (Client, Indexing, Platform) regenerated almost daily, plus llms.txt and Markdown docs Top weakness No public price, trial or self-serve signup. Access starts with a demo request |
||||||||||||
| 154 | OpenMetadataCollate, Inc. · Model platform | Knowledge | B | 66.9 | 3.0 (2) | n/a | n/a | Freemium | OAuth or key | Local | ||
|
Open-source data catalogue for discovery, lineage, data quality and governance, with connectors to external data systems. Top strength MCP built into every instance at /mcp and on by default since 2.0, with nothing extra to install Top weakness The 16 default tools take about 50,000 characters of definitions, 12,285 of them for search_metadata alone |
||||||||||||
| 176 | OnyxDanswerAI, Inc. (Onyx, formerly Danswer) · Model platform | Knowledge | B | 65.3 | 3.0 (2) | n/a | n/a | $20 / seat-mo | OAuth or key | Hosted | ||
|
Open-source enterprise search and chat platform, formerly Danswer. Top strength MIT Community Edition, MCP server included, run by Docker Compose, Helm or Terraform, with a two-week Cloud trial that needs no card Top weakness GHSA-q62f-rv3h-f822 (critical, CVSS 9.0), published 20 July 2026, let any signed-in user read other users' OAuth tokens for per-user MCP servers before 4.0.0 |
||||||||||||
| 181 | MarmotMarmot Data · Model platform | Knowledge | B | 64.5 | 3.5 (2) | n/a | n/a | $49 / mo | OAuth or key | Local | ||
|
Open-source data catalogue from Marmot Data Ltd in London, MIT licensed and shipped as one Go binary on Postgres. Top strength MIT licence, one Go binary on Postgres, with Docker images, a Helm chart and Linux and macOS builds for amd64 and arm64 Top weakness Pre-1.0 (0.11), and the release notes are generated lists of additions and fixes with no breaking-change section |
||||||||||||
| 213 | AtlanAtlan · Model platform | Knowledge | B | 62.7 | 3.5 (2) | n/a | n/a | Paid | OAuth or key | Hosted | ||
|
Hosted data catalogue and metadata platform for finding and managing enterprise data. Top strength OAuth per user at mcp.atlan.com/mcp, so each call runs with the user's own Atlan personas and policies, and API tokens carrying more than one persona are refused Top weakness Contact-sales only, with no published price, free tier, trial or self-serve sign-up |
||||||||||||
| 263 | DataHubAcryl Data, Inc. (DataHub) · Model platform | Knowledge | C | 59.5 | 3.5 (2) | n/a | n/a | Freemium | OAuth or key | Hosted + local | ||
|
Open-source data catalogue and metadata platform from Acryl Data, trading as DataHub. Top strength Apache-2.0 platform and MCP server, run with Top weakness The eight default tools carry about 26,000 characters of descriptions, and search and get_lineage each repeat the same 3,063-character filter grammar |
||||||||||||
| 401 | GuruGuru Technologies, Inc. · HTTP API | Knowledge | E | 45.3 | 2.0 (2) | n/a | n/a | Paid | OAuth or key | Hosted | ||
|
Hosted knowledge platform from Guru Technologies, Inc. in Philadelphia. Top strength Hosted MCP server at https://mcp.api.getguru.com/mcp, registered as com.getguru/mcp-server in the official MCP registry Top weakness No public prices, plans or trial, and the pricing page sends everyone to sales |
||||||||||||
| 452 | OverclockOverclock · Model platform | Knowledge | F | 7.7 | 1.0 (2) | n/a | n/a | Paid | OAuth | Local | ||
|
Hosted enterprise knowledge platform from Overclock Technologies Limited, a UK company incorporated on 22 July 2026. Top strength The privacy policy says Drive access is read-only and limited to folders a user selects, and Gmail access is read-only Top weakness No public docs, MCP tool definitions, endpoint or llms.txt |
||||||||||||
Nothing matches these filters. .
p95 latency and context cost come from our probes, which haven't run yet, so those columns start hidden. Grades run from AA to F, and agent-ready means BB or better. Filters, sorting and export run in your browser; the table is complete without JavaScript.
How we test this category
A fixed set of questions about one test company's documents and data (who owns a table, where a metric comes from, what a policy says), asked through each listing's agent interface as users with different permissions. We check whether answers cite the right source, whether a user ever sees what they shouldn't, and how long a new document takes to become findable. This test hasn't run yet, so Task success is pending and the grades here come from the categories assessed from public evidence.
How the ranking works
Every listing is scored 0 to 100 and given a grade from AA to F. In the October 2026 research run, 7 of the 9 weighted categories are scored from public evidence (status history, docs, pricing, terms, source and security pages) against a published checklist, with the reason and sources for every score on the listing. Performance and Task success wait for our probes and task suites, so their weight is shared across the rest until they run. Negative events deduct up to 15 points. Read the methodology.
For companies
Do agents find, use and choose your tools?
An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.