Research
What exists in 2026 for giving AI assistants governed access to a company's own documents: the MCP gateways, the self-hosted servers, how products apply permissions, and the alternatives to the big hosted search tools. Every fact about a product links to that product's own page.
Updated
PremAgentic compared with the self-hosted alternativesPremAgentic, Onyx, PipesHub, Archestra and Cognee side by side: where each runs, what it needs, who may read what, and what it does beyond access.
MCP gateways: tool access vs document permissionsThe MCP gateways of 2026, open source and commercial, with what each one governs, from each vendor's own pages. And the one decision no gateway can make.
Self-hosted MCP servers for company documentsMost self-hosted MCP document servers are built for one person's files. What a company server needs, and which self-hosted servers check who is asking.
Permission-aware RAG: filter before retrieval, or after?Where a RAG system checks permissions decides what it can leak. Before and after defined, what each product documents, and a checklist for buyers.
Glean alternatives that run on your own serversGlean alternatives sorted by where they actually run: your hardware, your cloud account run by the vendor, or the vendor's cloud. With each open source license read.
How these pages are checked
Each claim about another product quotes or closely follows that product's own documentation, license file, repository or announcement, and links to it. Where a product's pages are silent on something, the page says so rather than guessing. GitHub star counts and release dates are as of the date on each page.
These pages are written by the team behind PremAgentic, on-premises knowledge retrieval for agents, and each one says where PremAgentic fits.