Postmark
Postmark adds its own SOC 2 Type 2 report to a run of security work.
Comparison · Comms
Gromox vs Rocket.Chat
A side-by-side editorial comparison of Gromox and Rocket.Chat — release velocity, themes, recent moves, and the top alternatives to consider.
Gromox vs Rocket.Chat: at a glance
What is Gromox?
Gromox 3.13 adds scripts to move Exchange-for-All systems onto it.
Gromox ships a numbered release roughly monthly. 3.13 adds scripts to convert E4A systems to Gromox, full two-way sync of IMAP keywords with MAPI categories, multi-message vCard export and audit logging in emsmdb and zcore, and fixes an EWS gap where any user could answer, alter or move meeting requests in other mailboxes. 3.12 moved MAPI-to-internet conversion onto VMIME with RFC 2231 filenames; 3.11 added IMAP FETCH BINARY and Sent Items copies for send-as and send-on-behalf on shared mailboxes.
What is Rocket.Chat?
Rocket.Chat patches 8.9 LTS with the load fixes from 9.0 while the candidate reaches rc.7.
The 9.0 candidate line opened on 27 October with a licensing change: LDAP, SAML and Custom OAuth now require a premium plan. Since rc.4 the candidates have been fixes: rc.5 drops removed-license features for connected users and redacts OAuth codes from logs, rc.6 fixes Matrix federation auth, and rc.7 stops a web and desktop client memory leak and moves native LiveKit video to beta. On 6 November 8.9.1 LTS backported the notification, presence and startup load fixes plus a security hotfix.
Gromox vs Rocket.Chat: editorial side-by-side
Gromox
2.5COMMS
Gromox 3.13 adds scripts to move Exchange-for-All systems onto it.
◆ Current state
Gromox ships a numbered release roughly monthly. 3.13 adds scripts to convert E4A systems to Gromox, full two-way sync of IMAP keywords with MAPI categories, multi-message vCard export and audit logging in emsmdb and zcore, and fixes an EWS gap where any user could answer, alter or move meeting requests in other mailboxes. 3.12 moved MAPI-to-internet conversion onto VMIME with RFC 2231 filenames; 3.11 added IMAP FETCH BINARY and Sent Items copies for send-as and send-on-behalf on shared mailboxes.
◆ Where it's heading
The project keeps completing Exchange behaviour for clients that expect it, now including shared-mailbox Sent Items and meeting handling that matches Exchange. 3.13's conversion scripts and audit logging point at migration and compliance as the adoption path, alongside the IMAP work that has run since 3.8. Permission checks on EWS calendar operations show the protocol surface now gets security review, not only coverage.
◆ Prediction
Expect more EWS permission and behaviour corrections and continued IMAP4rev2 coverage; the E4A scripts suggest further migration tooling from other groupware.
Rocket.Chat
6.3COMMS
Rocket.Chat patches 8.9 LTS with the load fixes from 9.0 while the candidate reaches rc.7.
◆ 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. Since rc.4 the candidates have been fixes: rc.5 drops removed-license features for connected users and redacts OAuth codes from logs, rc.6 fixes Matrix federation auth, and rc.7 stops a web and desktop client memory leak and moves native LiveKit video to beta. On 6 November 8.9.1 LTS backported the notification, presence and startup load fixes plus a security hotfix.
◆ Where it's heading
9.0 is in stabilization: each candidate is smaller than the last, and the load fixes are being carried to the LTS line rather than held for the major. Native LiveKit video is being promoted step by step, from alpha to beta and now as the named default provider option.
◆ Prediction
With rc.7 down to a handful of fixes, 9.0.0 GA is the next likely release, followed by further 8.9.x LTS patches carrying the same fixes.
Alternatives to Gromox and Rocket.Chat
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 Gromox or Rocket.Chat.
Element X Android
Element X Android turns on multi-select forwarding and better search in v26.11.0.
Fonoster
Fonoster lets voice agents pick Anthropic, Google or Groq models and record calls with one switch.
Salesmsg
Salesmsg's Sherpa AI now sends replies and builds broadcasts on request, with approval first.
Proton Bridge
Proton Bridge v3.27.2 adds support for the oo7 keyring on Linux.
Netcore Cloud
Netcore keeps publishing unified-platform explainers with no product release.
See all Gromox alternatives → · See all Rocket.Chat alternatives →
Recent activity from Gromox and Rocket.Chat
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 4d agoRocket.Chat8.9.1 LTS: load fixes from 9.0 plus a security hotfix
- 4d agoRocket.Chat9.0 rc.7: client memory leak fixed, LiveKit video moves to beta
- 4d agoRocket.Chat9.0 rc.6: Matrix federation auth header fix
- 4d agoRocket.Chat9.0 rc.5: removed-license features shut off, OAuth codes redacted
- 6d agoRocket.Chat9.0 rc.4: notifications, presence and startup fixed under load
- 10d agoRocket.Chat9.0 rc.3: REST refusals become 403; /hooks status codes change
- 11d agoGromoxGromox 3.13
- 1mo agoGromoxGromox 3.12
- 1mo agoGromoxGromox 3.11
- 2mo agoGromox3.10 makes IMAP flags durable and teaches EWS Outlook for Mac's drafts
- 3mo agoGromox3.9 makes room bookings and EWS meetings properly actionable
- 4mo agoGromox3.8 splits the Information Store per store and extends IMAP
Frequently asked questions
What is the difference between Gromox and Rocket.Chat?
They serve adjacent needs but don't currently overlap on shipped themes. Rocket.Chat is currently shipping more aggressively (velocity 6.3 vs 2.5), 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 Gromox better than Rocket.Chat?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Rocket.Chat is currently shipping more aggressively (velocity 6.3 vs 2.5), with 0 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 Gromox?
Top Gromox alternatives in Comms are ranked by recent ship velocity. Browse the "Gromox alternatives" section above for the current picks, or visit /alternatives/gromox for the full list with editorial commentary on each.
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.