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Comparison · Collab
Nextcloud vs SiYuan
A side-by-side editorial comparison of Nextcloud and SiYuan — release velocity, themes, recent moves, and the top alternatives to consider.
Nextcloud vs SiYuan: at a glance
What is Nextcloud?
Nextcloud ships three patch lines in a day as 35.0.2 adds webhook metadata and a report API.
Nextcloud released 35.0.2, 34.0.5 and 33.0.10 on the same day, a month after the 35.0.0 major that swapped OnlyOffice for Euro-Office and added FrankenPHP support. The backports share a security-flavored core: a CSRF token on the share-accept endpoint, upload checks against session and share tokens, and logs that no longer leak sensitive data. 35.0.2 also adds richer node-webhook metadata, webhook-compatible comment events and an API for system-report sections.
What is SiYuan?
SiYuan 3.8.9 reaches RC, adding AI-agent extraction of images embedded in PDFs.
SiYuan moved 3.8.9 from beta.6 to rc.1 on Oct 28. The RC's only new item is AI-agent extraction of images embedded in PDFs; the rest of its long list matches beta.5's cumulative notes: pinned agent sessions, backlink filtering by database fields, block-reference collection through database automation, resizable table rows, mind-map themes and node copy/paste, TIFF previews and macOS proxy detection.
Nextcloud vs SiYuan: editorial side-by-side
Nextcloud
6.3COLLAB
Nextcloud ships three patch lines in a day as 35.0.2 adds webhook metadata and a report API.
◆ Current state
Nextcloud released 35.0.2, 34.0.5 and 33.0.10 on the same day, a month after the 35.0.0 major that swapped OnlyOffice for Euro-Office and added FrankenPHP support. The backports share a security-flavored core: a CSRF token on the share-accept endpoint, upload checks against session and share tokens, and logs that no longer leak sensitive data. 35.0.2 also adds richer node-webhook metadata, webhook-compatible comment events and an API for system-report sections.
◆ Where it's heading
The patch stream is still dominated by sharing permissions, resharer caps and encryption cache fixes, now applied across three supported branches at once. The small additions in 35.0.2, webhooks and the 'Unified Sharing Legacy Sync' groundwork, point to sharing being rebuilt under the hood and to more automation hooks for integrators. The 35 line is absorbing regressions from the major at a steady monthly pace.
◆ Prediction
Expect a 35.0.3 within a month continuing sharing and encryption fixes, with more of the unified-sharing work surfacing; the entries do not say when that rework becomes user-visible.
SiYuan
5.0COLLAB
SiYuan 3.8.9 reaches RC, adding AI-agent extraction of images embedded in PDFs.
◆ Current state
SiYuan moved 3.8.9 from beta.6 to rc.1 on Oct 28. The RC's only new item is AI-agent extraction of images embedded in PDFs; the rest of its long list matches beta.5's cumulative notes: pinned agent sessions, backlink filtering by database fields, block-reference collection through database automation, resizable table rows, mind-map themes and node copy/paste, TIFF previews and macOS proxy detection.
◆ Where it's heading
The 3.8.x line keeps turning databases and mind maps into structured tools that act on the block graph, and the built-in agent is gaining reach into document content such as PDFs. The release cadence is fast and noisy, with most builds repeating the same cumulative notes.
◆ Prediction
A stable 3.8.9 is likely within days, with little added beyond fixes now that it has reached RC.
Alternatives to Nextcloud 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 Nextcloud or SiYuan.
KACE
KACE extends its PHP2SHELL fix to the SDA deployment appliance, six days after disclosure.
Mattermost
Mattermost v12 puts user-scoped permissions, private models and audit trails on every agent action.
AFFiNE
AFFiNE's canaries stay on upkeep: a Swift Collections bump follows CVE and migration fixes.
Teable
Teable's Structured Query v2 now reports across multi-hop relations, with a strict mode against SQL.
Readwise
Readwise splits its bundle into Reader-only and Highlights-only plans and renames its first app.
See all Nextcloud alternatives → · See all SiYuan alternatives →
Recent activity from Nextcloud and SiYuan
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoSiYuanSiYuan 3.8.9 RC1: AI agent extracts images from PDFs
- 1d agoSiYuanSiYuan 3.8.9 beta 6 (same notes as beta 5)
- 1d agoSiYuanSiYuan 3.8.9 beta 5: full notes incl. pinned agent sessions
- 2d agoSiYuanSiYuan 3.8.9 beta 4 improves LaTeX paste and import
- 2d agoSiYuanSiYuan 3.8.9 beta 3 (same notes as beta 1)
- 2d agoSiYuanSiYuan 3.8.9 beta 2 (same notes as beta 1)
- 14d agoNextcloudNextcloud 35.0.2: webhook metadata, sharing fixes, report API
- 14d agoNextcloudNextcloud 33.0.10: share CSRF fix and sharing backports
- 14d agoNextcloudNextcloud 34.0.5: share CSRF fix, log redaction, sharing backports
- 1mo agoNextcloudNextcloud 35.0.1: sharing fixes, encryption key-cache cap, sidebar API back
- 1mo agoNextcloudNextcloud 35: Euro-Office replaces OnlyOffice, FrankenPHP support ⚡
- 1mo agoNextcloudNextcloud 32.0.15: share expiration time correction
Frequently asked questions
What is the difference between Nextcloud and SiYuan?
They serve adjacent needs but don't currently overlap on shipped themes. Nextcloud is currently shipping more aggressively (velocity 6.3 vs 5.0), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Nextcloud better than SiYuan?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Nextcloud is currently shipping more aggressively (velocity 6.3 vs 5.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Collab products to evaluate alongside.
What are the best alternatives to Nextcloud?
Top Nextcloud alternatives in Collab are ranked by recent ship velocity. Browse the "Nextcloud alternatives" section above for the current picks, or visit /alternatives/nextcloud 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.