Element
Element 1.12.33 ships: simpler recovery keys, mandatory verification, no libolm migration.
Comparison · Comms
Fonoster vs Gromox
A side-by-side editorial comparison of Fonoster and Gromox — release velocity, themes, recent moves, and the top alternatives to consider.
Fonoster vs Gromox: at a glance
What is Fonoster?
Fonoster ships four releases in a day to make linking a Twilio number a single step.
Fonoster went from v0.35 to v0.38.1 on October 28. The thread is Twilio: trunk provisioning for a number link is now idempotent, a Twilio number can be linked to an app or SIP agent in one API call, linking moved server-side with an API key or Auth Token (a breaking change), and the Numbers page can do it from the UI. v0.35 also lets Routr be configured through routr-one.yaml.
What is Gromox?
Gromox keeps closing the gap with Exchange one protocol surface at a time — this round it's IMAP flags and Outlook for Mac.
Gromox ships a numbered release roughly monthly, each a mix of Exchange-protocol enhancements and fixes across emsmdb, EWS, IMAP, and the store layer. Version 3.10 makes midb synchronize IMAP message flags to and from the mailbox so they survive deletion of midb.sqlite3, adds IMAP keyword support, teaches EWS the Outlook-for-Mac smart response draft types, extends FindPeople and GetUserPhoto to personal contacts, and adds a short-TTL cache for recurring user ID and group membership lookups.
Fonoster vs Gromox: editorial side-by-side
Fonoster
6.3COMMS
Fonoster ships four releases in a day to make linking a Twilio number a single step.
◆ Current state
Fonoster went from v0.35 to v0.38.1 on October 28. The thread is Twilio: trunk provisioning for a number link is now idempotent, a Twilio number can be linked to an app or SIP agent in one API call, linking moved server-side with an API key or Auth Token (a breaking change), and the Numbers page can do it from the UI. v0.35 also lets Routr be configured through routr-one.yaml.
◆ Where it's heading
After rebuilding its SIP and media edge and defaulting to HTTPS in the 0.31 to 0.33 run, Fonoster is now working on onboarding, using Twilio as the way to bring an existing number. The release rate stays very high and breaking changes still land in minor versions.
◆ Prediction
Expect the same number-linking flow for other carriers, or more Numbers page work; the entries only cover Twilio so far.
Gromox
2.5COMMS
Gromox keeps closing the gap with Exchange one protocol surface at a time — this round it's IMAP flags and Outlook for Mac.
◆ Current state
Gromox ships a numbered release roughly monthly, each a mix of Exchange-protocol enhancements and fixes across emsmdb, EWS, IMAP, and the store layer. Version 3.10 makes midb synchronize IMAP message flags to and from the mailbox so they survive deletion of midb.sqlite3, adds IMAP keyword support, teaches EWS the Outlook-for-Mac smart response draft types, extends FindPeople and GetUserPhoto to personal contacts, and adds a short-TTL cache for recurring user ID and group membership lookups.
◆ Where it's heading
The project is methodically completing Microsoft's protocol surface rather than building an alternative one. EWS went from partial handlers in 3.2 to the full meeting, delegate, and task surface in 3.6, and now picks up client-specific dialects like Outlook for Mac's draft types. IMAP is on the same path — keywords and colour categories in 3.8, IMAP4rev2 pieces, and now flag durability. Meanwhile the store layer keeps being split and cached for operability. The audience is clearly administrators migrating off Exchange or Kopano who need existing clients to behave unchanged.
◆ Prediction
Expect IMAP4rev2 coverage to keep filling in and more client-specific EWS dialects to appear as particular Outlook builds are tested against it.
Alternatives to Fonoster and Gromox
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 Fonoster or Gromox.
Tawk.to
tawk.to's widget 4.4.0 turns to keyboard and screen-reader fixes after a run of form work.
Krisp
Krisp 2.83.4 brings Voice Translation into conference calls and lightens Accent Conversion.
Pixelfed
Pixelfed 0.15.2 ships the PHP RCE patches and turns cached timelines on for everyone.
Salesmsg
Salesmsg Reviews can now trigger follow-ups automatically based on a customer's latest rating.
Netcore Cloud
Netcore keeps publishing competitor comparisons and ecommerce posts after its Orbit launch.
See all Fonoster alternatives → · See all Gromox alternatives →
Recent activity from Fonoster and Gromox
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 22h agoFonosterv0.38.1: stale proofs repaired, CI checks fault patches
- 1d agoFonosterv0.38.0: link a Twilio number from the Numbers page
- 1d agoFonosterv0.37.0: one-call Twilio number linking (breaking)
- 1d agoFonosterv0.36.0: idempotent Twilio trunk provisioning
- 1d agoFonosterv0.35.0: configure Routr via routr-one.yaml
- 3d agoFonosterv0.34.3: npm publishing fix
- 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
- 6mo agoGromox3.7 fixes shared calendars, EWS fields and Thunderbird discovery
- 7mo agoGromox3.6 lands the full EWS meeting, delegate and task surface ⚡
- 8mo agoGromox3.5 adds per-service listen directives and fixes notifications
Frequently asked questions
What is the difference between Fonoster and Gromox?
They serve adjacent needs but don't currently overlap on shipped themes. Fonoster 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 Fonoster better than Gromox?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Fonoster 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 Fonoster?
Top Fonoster alternatives in Comms are ranked by recent ship velocity. Browse the "Fonoster alternatives" section above for the current picks, or visit /alternatives/fonoster for the full list with editorial commentary on each.
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.