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Comparison · Comms
Dendrite vs Bandwidth
A side-by-side editorial comparison of Dendrite and Bandwidth — release velocity, themes, recent moves, and the top alternatives to consider.
Dendrite vs Bandwidth: at a glance
What is Dendrite?
A forked, relicensed Dendrite spent its first year catching up on Matrix protocol and security debt
The window opens with the first release after forking from matrix-org/dendrite under AGPLv3, which fixed long-standing state-reset bugs and added I2P and Onion listening. What follows is a security release closing a server-side request forgery vulnerability, then a release adding room version 12 support and two MSC implementations, and finally two quick patches for unresponsiveness, v12 room joins and malformed PDUs blocking whole transactions.
What is Bandwidth?
Bandwidth is finishing PSTN replacement country by country while opening the network to AI voice agents.
The last two months are dominated by coverage completion: Brazil and Mexico gained national outbound calling plus emergency services, and South Korea gained emergency services, in each case closing out the last gap needed for full PSTN replacement. Alongside that, the platform layer is being opened up — 10DLC campaign registration moved into a consolidated Registration Center with early-access API support in the US and Canada, messaging gained a message-sent callback and a delivery-receipt window extended from 12 to 73 hours, and voice quality is now observable in-app through MOS scores.
Dendrite vs Bandwidth: editorial side-by-side
Dendrite
0.0COMMS
A forked, relicensed Dendrite spent its first year catching up on Matrix protocol and security debt
◆ Current state
The window opens with the first release after forking from matrix-org/dendrite under AGPLv3, which fixed long-standing state-reset bugs and added I2P and Onion listening. What follows is a security release closing a server-side request forgery vulnerability, then a release adding room version 12 support and two MSC implementations, and finally two quick patches for unresponsiveness, v12 room joins and malformed PDUs blocking whole transactions.
◆ Where it's heading
This is a fork proving it can carry a homeserver. The order is telling: license and state correctness first, then a CVE, then protocol currency with room version 12, then the operational bugs that surface once people actually run it. Several fixes carry outside contributor credits, which is the fork's clearest sign of life.
◆ Prediction
Expect continued protocol catch-up on newer MSCs and room versions plus operational fixes, since federation compatibility is the constraint that sets this project's agenda.
Bandwidth
5.0COMMS
Bandwidth is finishing PSTN replacement country by country while opening the network to AI voice agents.
◆ Current state
The last two months are dominated by coverage completion: Brazil and Mexico gained national outbound calling plus emergency services, and South Korea gained emergency services, in each case closing out the last gap needed for full PSTN replacement. Alongside that, the platform layer is being opened up — 10DLC campaign registration moved into a consolidated Registration Center with early-access API support in the US and Canada, messaging gained a message-sent callback and a delivery-receipt window extended from 12 to 73 hours, and voice quality is now observable in-app through MOS scores.
◆ Where it's heading
Two tracks are running in parallel. The coverage track is methodical and geographic: each release removes one country from the list of places an enterprise cannot fully cut over from a legacy carrier. The platform track is about who Bandwidth's customer is becoming — SIP REFER on inbound SIP URI calls exists specifically so a voice AI agent can transfer a call and exit the flow, advanced call routing now splits traffic across multiple UCaaS and CCaaS providers on one account, and Bandwidth Build offers a self-serve Voice API trial with no sales call. That last one is a notable break from a business that has historically been sold, not signed up for.
◆ Prediction
Expect the country-by-country PSTN replacement notes to keep arriving at roughly monthly cadence, and the BYO-AI voice surface to keep gaining call-control primitives now that transfer-and-exit works. Whether the 10DLC Registration Center API leaves early access or widens past the US and Canada is not stated in these entries.
Alternatives to Dendrite and Bandwidth
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 Dendrite or Bandwidth.
Krisp
Krisp turned noise cancellation into a contact-center AI stack — and now defends it against deepfakes.
Openfire
Openfire's 5.1 line pairs XMPP channel binding with a steady cleanup of its own crypto
Signal Desktop
Signal is quietly rebuilding group governance while polls and pins push into everyday chats
Trumpia
Trumpia publishes SMS marketing explainers where its release notes should be.
Telnyx
Adding email to the stack so voice, SMS, WhatsApp and inference all bill as one API
See all Dendrite alternatives → · See all Bandwidth alternatives →
Recent activity from Dendrite and Bandwidth
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoBandwidthVoice Quality Metrics: MOS Scores
- 17d agoBandwidthMessaging Delivery Enhancements
- 29d agoBandwidthPSTN Replacement Coverage in Mexico
- 29d agoBandwidth10DLC Registration Center – API Access
- 29d agoBandwidthPSTN Replacement Coverage in Brazil
- 29d agoBandwidthPSTN Replacement Coverage in South Korea
- 11mo agoDendriteFixes startup crash on rooms lacking a create event
- 11mo agoDendriteFixes v12 room joins, invites and stalled transactions
- 11mo agoDendriteRoom version 12 support and NATS refactoring
- 1y agoDendriteFixes SSRF in gomatrixserverlib and speeds ACL loading
- 1y agoDendriteFirst release after the fork, relicensed under AGPLv3 ⚡
Frequently asked questions
What is the difference between Dendrite and Bandwidth?
They serve adjacent needs but don't currently overlap on shipped themes. Bandwidth is currently shipping more aggressively (velocity 5.0 vs 0.0), 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 Dendrite better than Bandwidth?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Bandwidth is currently shipping more aggressively (velocity 5.0 vs 0.0), 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 Dendrite?
Top Dendrite alternatives in Comms are ranked by recent ship velocity. Browse the "Dendrite alternatives" section above for the current picks, or visit /alternatives/dendrite for the full list with editorial commentary on each.
What are the best alternatives to Bandwidth?
Top Bandwidth alternatives in Comms are ranked by recent ship velocity. Browse the "Bandwidth alternatives" section above for the current picks, or visit /alternatives/bandwidth for the full list with editorial commentary on each.