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Comparison · Collab

Circle vs SiYuan

A side-by-side editorial comparison of Circle and SiYuan — release velocity, themes, recent moves, and the top alternatives to consider.

Shared themes:mcp

Circle vs SiYuan: at a glance

FeatureCircleSiYuan
SectorCollabCollab
Velocity score6.36.3
Sparks · 30d01
Top themescommunity-platform, ai-agents, website-builder, mcplocal-first, knowledge-management, ai-agent, self-hosted
Last editorial update26d ago4h ago
WebsiteVisit →Visit →

What is Circle?

Circle rebuilt itself around an AI that runs the community, and now builds its landing pages too.

Circle ships a dated monthly release covering web, iOS, Android and its branded-app product, and the last six months have all pointed one direction. Circle Eclipse, announced in June and opened to every customer in late July, re-skinned both member and admin surfaces and brought an AI layer with memory, roughly fifty domain-specific skills and project workspaces. August extends that AI outward: it now builds complete pages from a prompt or an existing URL — homepages, sales pages, event pages in the operator's brand — generating copy and images and running SEO audits inside the builder. The rest of the release is retention plumbing: a Get Started onboarding checklist on web and mobile, live emoji reactions in chats and rooms, customizable member directory filters, and native mobile video recording.

Read the full Circle trajectory →

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.

Read the full SiYuan trajectory →

Circle vs SiYuan: editorial side-by-side

C
Circle
COLLAB
6.3

Circle rebuilt itself around an AI that runs the community, and now builds its landing pages too.

◆ Current state

Circle ships a dated monthly release covering web, iOS, Android and its branded-app product, and the last six months have all pointed one direction. Circle Eclipse, announced in June and opened to every customer in late July, re-skinned both member and admin surfaces and brought an AI layer with memory, roughly fifty domain-specific skills and project workspaces. August extends that AI outward: it now builds complete pages from a prompt or an existing URL — homepages, sales pages, event pages in the operator's brand — generating copy and images and running SEO audits inside the builder. The rest of the release is retention plumbing: a Get Started onboarding checklist on web and mobile, live emoji reactions in chats and rooms, customizable member directory filters, and native mobile video recording.

◆ Where it's heading

The community platform keeps being reframed as a business-operations platform: Discover 2.0 supplies member demand, Circle AI does the structuring work, Circle Studios sells the operating labor outright. The page builder fills the one gap in that loop — the acquisition surface an operator previously built somewhere else — and shipping SEO audits with it says Circle intends to own how communities get found, not just how they run. Circle MCP in April remains the tell that the operator was always expected to be an agent. Underneath, the retention items this month are the unglamorous half of the same funnel argument.

◆ Prediction

The fifty Circle AI skills are the surface most likely to open next, either to operator-authored skills or to skills invoked through Circle MCP rather than only in the Circle UI. Expect page building and Discover to connect, so a generated sales page feeds the marketplace listing directly.

S
SiYuan
COLLAB
6.3

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 Circle 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 Circle or SiYuan.

See all Circle alternatives → · See all SiYuan alternatives →

Recent activity from Circle and SiYuan

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 7h agoSiYuanSiYuan v3.8.4-beta.4: agent workspace control and MiniMax image generation
  2. 1d agoSiYuanSiYuan v3.8.4-beta.3: streaming agent preview and MCP SQL fix
  3. 1d agoSiYuanSiYuan v3.8.4-beta.2: Docker fonts, custom block search
  4. 2d agoSiYuanSiYuan v3.8.4-beta.1: pinnable documents, rich text tables, remote GUI
  5. 2d agoSiYuanSiYuan v3.8.4-alpha.9: Serbian language, fullscreen agent dock
  6. 3d agoSiYuanSiYuan v3.8.4-alpha.8: document pinning, sync improvements
  7. 27d agoCircleAugust release: AI website builder, live reactions, and more
  8. 1mo agoCircleCircle Eclipse is available to everyone
  9. 3mo agoCircleCircle Eclipse 2026: Introducing Circle AI, Discover, Studios, and more
  10. 3mo agoCircle📲 May release: Public webinars, new custom app builder templates, and more
  11. 5mo agoCircle🔗 April release: Circle MCP, AI agent upgrades, and more
  12. 6mo agoCircle🗺️ March release: Member map, video recorder, and more

Frequently asked questions

What is the difference between Circle and SiYuan?

Both compete on the same themes — mcp — within Collab. Circle and SiYuan are shipping at a similar cadence (velocity 6.3 vs 6.3, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.

Is Circle better than SiYuan?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Circle and SiYuan are shipping at a similar cadence (velocity 6.3 vs 6.3, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Collab products to evaluate alongside.

What are the best alternatives to Circle?

Top Circle alternatives in Collab are ranked by recent ship velocity. Browse the "Circle alternatives" section above for the current picks, or visit /alternatives/circle 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.