ONLYOFFICE DocSpace vs PDF Viewer
ONLYOFFICE DocSpace is an MCP server published by ONLYOFFICE. Marketplaces we read that list it: 1 (Docker MCP Catalog). PDF Viewer is a plugin bundle for AI coding tools published by Anthropic. Marketplaces we read that list it: 1 (Claude: knowledge-work-plugins). As of our marketplace pass on 2026-10-12. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace | ||
|---|---|---|
| Docker MCP Catalog | Listed Version: sha256:e7c4de3a7d18 Forks (GitHub): 10 Pulls (Docker Hub): 56 409 Stars (Docker Hub): 0 Stars (GitHub): 32 Not marked · First seen |
Not listed |
| Claude: knowledge-work-plugins | Not listed | Listed Version: 0.2.0 Forks (GitHub): 3 317 Stars (GitHub): 29 279 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | ONLYOFFICE DocSpace | PDF Viewer |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 32 (worse) | 29 279 (better) |
| Pulls (Docker Hub) (differs) | 56 409 | No figure on Docker Hub |
| Forks (GitHub) (differs) | 10 (worse) | 3 317 (better) |
| Last release | Not published | Not published |
| Where it runs (differs) | On your machine (mcp/onlyoffice-docspace) | On your machine (@modelcontextprotocol/server-pdf) |
| Transport (differs) | stdio | Not stated |
| Tools it declares (differs) | 23 | Not published |
| Environment variables it asks for (differs) | 2, secrets among them: 1 | Not published |
| Parts of the bundle (differs) | Not a bundle | 6 |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/onlyoffice/docspace-mcp | github.com/anthropics/knowledge-work-plugins |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
ONLYOFFICE DocSpace
ONLYOFFICE DocSpace is a room-based collaborative platform which allows organizing a clear file structure depending on users' needs or project goals.
PDF Viewer
View, annotate, and sign PDFs in a live interactive viewer. Mark up contracts, fill forms with visual feedback, stamp approvals, and place signatures — then download the annotated copy.
How to run each
ONLYOFFICE DocSpace As a local MCP server: Docker image
claude mcp add --env "DOCSPACE_API_KEY=<YOUR_DOCSPACE_API_KEY>" --transport stdio onlyoffice-docspace -- docker run -i --rm -e DOCSPACE_API_KEY mcp/onlyoffice-docspaceRequires: DOCSPACE_API_KEY (secret)
PDF Viewer
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
The marketplaces of PDF Viewer publish no list of tools, so we do not compare tools.
Settings each asks for
The marketplaces of PDF Viewer publish no settings it asks for, so we do not compare settings.
What it can do: ONLYOFFICE DocSpace · What it can do: PDF Viewer · Compare two other plugins
Data comes from the Docker MCP Catalog (desktop.docker.com/mcp/catalog) and Docker Hub. Data comes from the public marketplace file https://github.com/anthropics/knowledge-work-plugins/blob/HEAD/.claude-plugin/marketplace.json. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.