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Comparison · Comms
Rocket.Chat vs Rspamd
A side-by-side editorial comparison of Rocket.Chat and Rspamd — release velocity, themes, recent moves, and the top alternatives to consider.
Rocket.Chat vs Rspamd: at a glance
What is Rocket.Chat?
Rocket.Chat's fifth 9.0 candidate is about load: notifications, presence and startup.
The 9.0 candidate line opened on 27 October with a licensing change: LDAP, SAML and Custom OAuth now require a premium plan, and seven login providers are removed. rc.3 moved REST refusals to a single 403 shape, and rc.4 on 3 November is a performance and reliability batch: push and email notifications no longer stall under load, presence stops writing on every heartbeat, and a failed startup step now exits instead of hanging. 8.9.0 LTS remains supported until 31 October 2027.
What is Rspamd?
Rspamd 4.2 hardens its parsers and ships memory-safety fixes three releases running.
The 4.2 line opened in September with a public suffix lookup replacing the old TLD tables, attachment content extraction for SVG, OOXML and DOCX, and one scheduler over the symbol dependency graph. 4.2.1 fixed critical memory-safety bugs including an HTTP heap overflow. 4.2.2 added wallet-address detection across twelve named currencies and changed MIME digests. 4.2.3 stopped trusting ARC forwarders whose seal fails and merged duplicate RBL queries, so a rule scores once per matched value.
Rocket.Chat vs Rspamd: editorial side-by-side
Rocket.Chat
6.3COMMS
Rocket.Chat's fifth 9.0 candidate is about load: notifications, presence and startup.
◆ Current state
The 9.0 candidate line opened on 27 October with a licensing change: LDAP, SAML and Custom OAuth now require a premium plan, and seven login providers are removed. rc.3 moved REST refusals to a single 403 shape, and rc.4 on 3 November is a performance and reliability batch: push and email notifications no longer stall under load, presence stops writing on every heartbeat, and a failed startup step now exits instead of hanging. 8.9.0 LTS remains supported until 31 October 2027.
◆ Where it's heading
The candidates have moved from what 9.0 removes to whether it holds up on busy workspaces. The rc.4 fixes target large deployments, the same customers the premium SSO requirement is aimed at, and one of them fixes SAML login after a restart.
◆ Prediction
The fixes in rc.4 read like final hardening, so a 9.0.0 release is the next likely entry, carrying the licensing change from rc.0 unchanged.
Rspamd
5.0COMMS
Rspamd 4.2 hardens its parsers and ships memory-safety fixes three releases running.
◆ Current state
The 4.2 line opened in September with a public suffix lookup replacing the old TLD tables, attachment content extraction for SVG, OOXML and DOCX, and one scheduler over the symbol dependency graph. 4.2.1 fixed critical memory-safety bugs including an HTTP heap overflow. 4.2.2 added wallet-address detection across twelve named currencies and changed MIME digests. 4.2.3 stopped trusting ARC forwarders whose seal fails and merged duplicate RBL queries, so a rule scores once per matched value.
◆ Where it's heading
The input-hardening walk from 4.1.x has become line-wide policy: limits on untrusted UCL, bounded PDF and decompression work, and HTML parsing that matches browsers so content cannot hide from the scan. Detection moves the same way, into what attachments and hidden text actually contain. Point releases keep carrying incompatible changes to digests and scoring, so operators need to read the notes on every update.
◆ Prediction
Expect more browser-parity fixes in HTML and URL handling, and attachment extraction beyond the SVG and OOXML set. The planned flip of allow_file_and_shm_inputs to false does not appear in the 4.2 notes, so it remains the breaking change to watch.
Alternatives to Rocket.Chat and Rspamd
Other Comms 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 Rocket.Chat or Rspamd.
Netcore Cloud
Netcore's blog keeps pitching search-plus-email on one data core, with no product release.
Superhuman
Superhuman gives team admins a console and Enterprise a usage report that counts MCP.
Slack
Slack's CLI now points coding agents to its MCP server and Skills plugin
Synapse
Synapse opens the 1.165 cycle on schedule after two 1.164 patches
Whereby
Whereby folds three months into one digest and still lists nothing specific
See all Rocket.Chat alternatives → · See all Rspamd alternatives →
Recent activity from Rocket.Chat and Rspamd
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoRocket.Chat9.0 rc.4: notifications, presence and startup fixed under load
- 5d agoRocket.Chat9.0 rc.3: REST refusals become 403; /hooks status codes change
- 6d agoRocket.Chat9.0 rc.2: version bump only
- 8d agoRocket.Chat9.0 rc.1: noise cancellation choice for LiveKit calls
- 8d agoRocket.Chat9.0 rc.0: LDAP, SAML and Custom OAuth become premium-only ⚡
- 15d agoRspamd4.2.3: ARC trust fix, merged RBL queries, browser-style HTML parsing
- 25d agoRspamd4.2.2: crypto wallet detection and changed MIME digests
- 27d agoRocket.Chat8.9.0 LTS: 12-month support, Deno removed, hybrid AI Search
- 1mo agoRspamd4.2.1: critical HTTP and memory-safety fixes
- 1mo agoRspamd4.2.0: public suffix lookup and attachment content extraction
- 2mo agoRspamdCloses an arbitrary file read reachable by any TCP client
- 3mo agoRspamdController accepted any password on a malformed hash
Frequently asked questions
What is the difference between Rocket.Chat and Rspamd?
They serve adjacent needs but don't currently overlap on shipped themes. Rocket.Chat is currently shipping more aggressively (velocity 6.3 vs 5.0), with 1 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 Rocket.Chat better than Rspamd?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Rocket.Chat is currently shipping more aggressively (velocity 6.3 vs 5.0), with 1 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Comms products to evaluate alongside.
What are the best alternatives to Rocket.Chat?
Top Rocket.Chat alternatives in Comms are ranked by recent ship velocity. Browse the "Rocket.Chat alternatives" section above for the current picks, or visit /alternatives/rocketchat for the full list with editorial commentary on each.
What are the best alternatives to Rspamd?
Top Rspamd alternatives in Comms are ranked by recent ship velocity. Browse the "Rspamd alternatives" section above for the current picks, or visit /alternatives/rspamd for the full list with editorial commentary on each.