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Comparison · Collab
Memos vs SiYuan
A side-by-side editorial comparison of Memos and SiYuan — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:self-hostedmcp
Memos vs SiYuan: at a glance
What is Memos?
Memos adds collaborative Spaces without handing administrators the keys to everyone's notes.
Memos is a self-hosted memo archive that has spent three release candidates rebuilding its foundations rather than its surface. 0.27 embedded an MCP server in the instance, 0.30 flipped undeclared instances to private mode and regenerated that MCP surface from the OpenAPI schema, and 0.31.0-rc.1 now introduces first-class Spaces with ADMIN and USER memberships. The ownership model was rewritten alongside it: instance administrators are no longer implicit collaborators on other people's memos.
What is SiYuan?
SiYuan v3.8.4 beta cycle adds agent-controlled database fields, MiniMax image gen, and skill file management
SiYuan is deep in the v3.8.4 pre-release cycle, now at beta.4, shipping a dense stream of enhancements across each daily build. The defining theme of this release cycle is agent-control expansion: the AI can now configure database fields, manage skill files, stream Markdown previews, and use custom AI provider headers — moving SiYuan from a tool where AI assists with writing to one where AI can reshape the workspace structure itself. Mobile UX and PDF annotation improvements are running in parallel.
Memos vs SiYuan: editorial side-by-side
Memos
3.8COLLAB
Memos adds collaborative Spaces without handing administrators the keys to everyone's notes.
◆ Current state
Memos is a self-hosted memo archive that has spent three release candidates rebuilding its foundations rather than its surface. 0.27 embedded an MCP server in the instance, 0.30 flipped undeclared instances to private mode and regenerated that MCP surface from the OpenAPI schema, and 0.31.0-rc.1 now introduces first-class Spaces with ADMIN and USER memberships. The ownership model was rewritten alongside it: instance administrators are no longer implicit collaborators on other people's memos.
◆ Where it's heading
The direction runs from one person's notebook toward shared, agent-addressable infrastructure, and the order matters — access control and a stable API surface landed before multi-user sharing did. Each candidate has carried its breaking changes rather than deferring them: Shortcuts became Saved Views across the API, MCP tools and web routes, reactions lost content_id, S3 attachments stopped returning presigned URLs, and the Explore and per-user RSS feeds now return 404. Memos is willing to spend client compatibility to keep the data model coherent.
◆ Prediction
Expect 0.31 to reach a stable release with migration guidance for the Saved Views rename, and for Space scoping to extend next to the surfaces the notes say stay global — Archived, Inbox, profiles and Settings.
SiYuan
6.3COLLAB
SiYuan v3.8.4 beta cycle adds agent-controlled database fields, MiniMax image gen, and skill file management
◆ Current state
SiYuan is deep in the v3.8.4 pre-release cycle, now at beta.4, shipping a dense stream of enhancements across each daily build. The defining theme of this release cycle is agent-control expansion: the AI can now configure database fields, manage skill files, stream Markdown previews, and use custom AI provider headers — moving SiYuan from a tool where AI assists with writing to one where AI can reshape the workspace structure itself. Mobile UX and PDF annotation improvements are running in parallel.
◆ Where it's heading
SiYuan is building toward an agent-orchestrated personal knowledge base, where the AI layer can modify not just content but the organizational schema. The skill file management system suggests an emerging plugin-like architecture for agent behaviors. As multimodal generation (MiniMax image support) gets wired in, SiYuan's trajectory is toward a locally-run AI workspace that rivals cloud-based tools without the data-residency trade-off.
◆ Prediction
v3.8.4 stable will ship soon given the move to beta.4. The agentic features (database field configuration, skill management) will attract integrations from local-first AI workflow builders. Expect MiniMax and other provider integrations to expand in the next cycle.
Alternatives to Memos and SiYuan
Other Collab products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Memos or SiYuan.
Nextcloud
Nextcloud runs three LTS branches in parallel, shipping bug fixes and quiet performance wins.
Mattermost
Mattermost builds out its thought-leadership case for regulated-industry AI while v12.0 deprecations signal a platform break
Teable
Teable adds Composio integration and Scheduled Routines, pivoting from spreadsheet to agentic workflow platform.
Happeo
Happeo doubles down on SEO content to own intranet search terms for mid-market buyers.
AFFiNE
AFFiNE ships stable iOS Share Extension imports while patching editor correctness and selfhost deployment
See all Memos alternatives → · See all SiYuan alternatives →
Recent activity from Memos and SiYuan
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 4h agoSiYuanSiYuan v3.8.4-beta.4: agent workspace control and MiniMax image generation ⚡
- 21h agoSiYuanSiYuan v3.8.4-beta.3: streaming agent preview and MCP SQL fix
- 1d agoSiYuanSiYuan v3.8.4-beta.2: Docker fonts, custom block search
- 2d agoSiYuanSiYuan v3.8.4-beta.1: pinnable documents, rich text tables, remote GUI
- 2d agoSiYuanSiYuan v3.8.4-alpha.9: Serbian language, fullscreen agent dock
- 3d agoSiYuanSiYuan v3.8.4-alpha.8: document pinning, sync improvements
- 17d agoMemosCollaborative Spaces, author-owned memos, and Saved Views ⚡
- 1mo agoMemosEmbedded MCP endpoint, live SSE updates, and revocable share links ⚡
- 1mo agoMemosMemos Web Clipper and a redesigned memo detail rail
- 2mo agoMemosPrivate by default, CEL time filters, and a stateless MCP endpoint ⚡
- 5mo agoMemosMentions, voice recording, and Live Photo attachments
Frequently asked questions
What is the difference between Memos and SiYuan?
Both compete on the same themes — self-hosted, mcp — within Collab. SiYuan is currently shipping more aggressively (velocity 6.3 vs 3.8), with 1 editorial sparks in the last 30 days against 1. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Memos better than SiYuan?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. SiYuan is currently shipping more aggressively (velocity 6.3 vs 3.8), with 1 editorial sparks in the last 30 days against 1. For your specific use case, the alternatives sections above list other Collab products to evaluate alongside.
What are the best alternatives to Memos?
Top Memos alternatives in Collab are ranked by recent ship velocity. Browse the "Memos alternatives" section above for the current picks, or visit /alternatives/memos for the full list with editorial commentary on each.
What are the best alternatives to SiYuan?
Top SiYuan alternatives in Collab are ranked by recent ship velocity. Browse the "SiYuan alternatives" section above for the current picks, or visit /alternatives/siyuan for the full list with editorial commentary on each.