Knowledge Management Software: 8 Tools Compared, with Hosting Location

Knowledge management software is usually compared for teams writing wikis. Practice often looks different: in a law firm, a tax office, a library or an archive, the knowledge isn’t wiki pages — it’s documents. Contracts, notices, files, scans. And the first question there isn’t “which editor is prettier” but “where does the data live and who can reach it”.

So this comparison has a column the usual lists skip: hosting location. And a second look that’s usually missing: what the tools can do with documents, not just typed text.

The comparison

Tool	Built for	Open source	Where the data lives
Confluence	Team wiki in the Atlassian world	No	Cloud (region selectable) / Data Center
Notion	Flexible team workspaces	No	US
Nuclino	Lightweight team wiki	No	EU (Germany)
Slite	Docs for remote teams	No	EU
BookStack	Self-hosted wiki	Yes	Your server
Obsidian	Personal linked notes	No (open files)	Your device
Capacities	Personal structured notes	No	EU
Memexa	Documents + AI access via MCP	No (open export)	EU

Sorted by situation

The team writes wiki pages and lives in Jira: Confluence — the standard, sluggish but connectable to everything. The team wants it lighter: Nuclino (German company, EU-hosted, pleasantly reduced) or Slite. Full control, own servers, IT on hand: BookStack — open source, proven, free; maintenance is the price. Individual with text knowledge: Obsidian or Capacities — the detailed comparison is here.

The professional lens: law firms, tax offices, libraries, archives

Here the usual recommendations flip, for three reasons:

1. The knowledge is documents. A wiki doesn’t help when the answer sits in a scanned notice from 2019. What’s needed is text recognition and search inside the document — the wiki camp (Confluence, Notion, Nuclino, Slite, BookStack) indexes attachments superficially at best.
2. Data location is a duty, not a preference. Client and personal data on US servers is simply not an option for many firms and public bodies. That filters out Notion and makes the EU column above the first sorting question.
3. Answers must be verifiable. “It’s somewhere in the file” doesn’t cut it — you need the source: which document, which page.

That profile is exactly what Memexa is built for: documents and scans run through text recognition, get linked in a knowledge graph, and every answer names document and page. On top comes the part classic knowledge management software doesn’t have yet: the knowledge is usable by Claude or ChatGPT via MCP — “what did we decide about client X’s depreciation in 2023?” becomes a question to the AI, with a cited source. EU-hosted, GDPR details here.

To be fair: Memexa is not a team wiki with page permissions and editing workflows. If you need both, combine them — wiki for the processes, document memory for the files.

Frequently asked questions

What does it cost to start?

BookStack is free (plus a server), Nuclino and Slite start with free tiers, Confluence and Notion likewise. Memexa has a permanently free plan; paid plans start at €12/month. For a tax office the more relevant math is usually search time: one unfound source costs more than any monthly license.

Can you do knowledge management without the cloud?

Yes — BookStack (your server) and Obsidian (your device) answer the question fully locally. The price is maintenance, or doing without team access and document text recognition.

How do you start without overreaching?

With the existing stock, not with structure: make the documents you already have searchable first, then document processes. A searchable archive gets used from day one — an empty wiki doesn’t.