Open-source Nextcloud MCP alternatives
The Nextcloud MCP server publishes its source, which matters for a tool that reaches 110+ endpoints across files, notes, calendar, and chat. Reading the repo tells you exactly what an agent can touch before you connect it. Every option below is open source too, so you can audit the code and pin a version.
Some of these run locally against your own service; others are open-source servers in front of a hosted product. The split is worth noting: open source lets you read the code either way, but only the local ones keep the data on your infrastructure.
The 8 best open-source alternatives
Open source and self-hostable, the MinIO server browses buckets, reads and writes objects, manages versioning, and asks AI questions about stored objects, with code you can vet before pointing it at your store.
Set up MinIO →- BoxOfficial
Box's server is open source though the storage is hosted: search, read, organize, and run Box AI over enterprise content via OAuth. You can read the connector even though the content lives in Box.
Set up Box → - Google Drive (Workspace MCP)Community
The open-source Google Workspace server, scoped to Drive, searches, reads, creates, and shares Drive files over OAuth and runs locally, so you audit the code and keep the process on your own machine.
Set up Google Drive (Workspace MCP) → AWS Labs' open-source server runs any AWS CLI command with validation and read-only mode, reaching S3 and beyond. The repo shows precisely which calls it can make against your account.
Set up AWS (AWS Labs) →For the notes side of Nextcloud, Notion's server is open source and reads and writes pages and databases over OAuth, an inspectable connector to a stronger document model, with the workspace hosted by Notion.
Set up Notion →Open source as well, Cloudflare's remote servers manage R2 object storage along with Workers, KV, and D1, code you can read while the storage itself runs on Cloudflare's edge.
Set up Cloudflare →The community Slack server is open source and runs locally, reading history, DMs, and search without a workspace bot, covering the chat side of Nextcloud Talk with source you can audit.
Set up Slack →Doist's official Todoist server is open source and tightly scoped to tasks: create, find, update, and complete tasks, projects, labels, and reminders, an auditable connector if you used Nextcloud's task and deck features.
Set up Todoist →
How to choose
Among the open-source options, MinIO, the Google Drive server, AWS, and Slack run locally so both the code and the process stay yours, the closest in spirit to self-hosting Nextcloud. Box, Notion, Cloudflare, and Todoist are open-source connectors in front of hosted products, so you can read the code while the data lives with the vendor. Match the pick to which Nextcloud feature you relied on, and read the repo before granting write access.
FAQ
- Is the Nextcloud MCP server open source?
- Yes. The community Nextcloud server publishes its code, which is worth reading given it exposes 110+ tools across files, notes, calendar, and chat. Every alternative on this page is open source as well.
- Which open-source alternatives keep my data on my own systems?
- MinIO, the Google Drive Workspace server, AWS, and Slack run locally, so the server process stays yours. Box, Notion, Cloudflare, and Todoist are open-source connectors to hosted products, so the code is auditable but the data lives with the vendor.