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Respond.io upgraded its AI Agents to GPT-5.6 and added TikTok Business Messaging for US accounts.
Alternatives · team communication tools
Roundcube alternatives
The best Roundcube alternatives in team communication tools, ranked by Sparkpulse's velocity_score.
Updated Sep 14, 2026
Looking for the best alternatives to Roundcube? Sparkpulse tracks and ranks 12 alternatives in team communication tools by shipping velocity — how frequently each ships meaningful updates, verified from official changelogs. For reference, Roundcube shipped 0 meaningful updates in the last 30 days and carries a velocity score of 5.0 out of 10 in 2026. The alternatives below are ranked the same way, so you're comparing real release momentum, not marketing claims.
About Roundcube
Roundcube patches 28+ vulnerabilities across two branches in a five-month hardening sprint
Roundcube has shipped six security releases across its main 1.7.x and LTS 1.6.x branches since June, patching a cumulative 28+ vulnerabilities including an RCE via the markasjunk plugin's cmd_learn driver, IMAP command injection through LITERAL+ byte-count desynchronization, multiple SSRF bypasses, cross-user contact group access, and zero-click stored XSS. The simultaneous dual-branch cadence shows active maintenance of both lines.
Velocity 5.0 · Last update 5d ago
Top 12 alternatives to Roundcube
Ranked by recent ship velocity. Tap any card for the full editorial breakdown, or pivot to a head-to-head.
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Zoho Cliq 7.0 bets on AI conversation summaries and Neat hardware to close the gap with enterprise messaging platforms
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Salesmsg now runs the entire sales-to-NPS loop in one thread — outbound, AI reply, booking, survey, and routing.
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FluentBooking 2.4.0 opens the booking system to AI agents via MCP — the most directional release since the plugin launched.
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Stalwart adds full SCIM v2 provisioning and 24-language calendar support as its standards coverage extends further than most commercial mail servers.
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Bandwidth ships Identity Presentation (branded calling) in beta — trust layer for enterprise outbound calling.
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Slack raises the Marketplace bar back to ten installs while the agent platform consolidates.
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Rocket.Chat finishes the 8.8 calling work while the licence wall for SSO gets a date.
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The final v1.x release slipped by one patch, but the v2 deadline stands.
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Krisp adds deepfake detection and expands Voice Translation as its Call Center AI platform deepens enterprise compliance tools.
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Netcore's recent entries are blog content, not product releases — the signal is a BFSI and ecommerce vertical sales push.
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Canary Mail ships AI chat history while sustaining a cross-platform bug fix cadence.
Roundcube vs alternatives — shipping velocity at a glance
Velocity score (0–10) and meaningful releases shipped in the last 30 days, from official changelogs. Higher = shipping faster.
| Product | Velocity | Sparks · 30d | Focus areas | Latest release |
|---|---|---|---|---|
| Roundcube (baseline) | 5.0 | 0 | securityxssssrf | — |
| Respond.io | 7.5 | 0 | customer-messagingai-agentsomnichannel | — |
| Zoho Cliq | 6.3 | 1 | ai-messagingenterprise-collaborationzoho-suite | AI that moves work forward: Inside Zoho Cliq 7.0 |
| Salesmsg | 6.3 | 0 | sms-salesai-agentscustomer-feedback | Collect and Act on Customer Feedback Right Inside Salesmsg with Surveys |
| FluentBooking | 6.3 | 1 | mcpai-agentsbooking | Introducing MCP for AI Agents – FluentBooking 2.4.0 |
| Stalwart | 6.3 | 1 | email-serverscimjmap | v0.16.20 |
| Bandwidth | 6.3 | 0 | voipcommunications-apircs | Identity Presentation – Beta |
| Slack | 6.3 | 1 | agentsmcpdeveloper-platform | Announcing Slack Code |
| Rocket.Chat | 6.3 | 1 | team-chatvoice-callingscreen-sharing | 8.8.0-rc.0: LDAP/SAML go Premium in 9.0, forced private-room E2EE |
| Apprise | 6.3 | 1 | notificationsmajor-versiondeprecation | Last release of the v1.x line — pin before v2 breaks |
| Krisp | 5.0 | 0 | call-center-aivoice-translationaccent-conversion | — |
| Netcore Cloud | 5.0 | 0 | marketing-automationbfsiemail-deliverability | — |
| Canary Mail | 5.0 | 0 | emailprivacyai-chat | — |
The 12 best Roundcube alternatives, in depth
1. Respond.io · velocity 7.5
Respond.io upgraded its AI Agents to GPT-5.6 and added TikTok Business Messaging for US accounts.
Its velocity score of 7.5/10 reflects longer-term release cadence.
Where Roundcube leans on security, xss and ssrf, Respond.io focuses on customer messaging, ai agents and omnichannel.
Respond.io and Roundcube have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
Full Respond.io trajectory → · Compare Roundcube vs Respond.io →
2. Zoho Cliq · velocity 6.3
Zoho Cliq 7.0 bets on AI conversation summaries and Neat hardware to close the gap with enterprise messaging platforms.
Over the last 30 days Zoho Cliq shipped 1 meaningful update vs Roundcube's 0, most recently “AI that moves work forward: Inside Zoho Cliq 7.0”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Roundcube leans on security, xss and ssrf, Zoho Cliq focuses on ai messaging, enterprise collaboration and zoho suite.
Over the last 30 days Zoho Cliq has been shipping faster than Roundcube — a point in its favour if release momentum matters to you.
Full Zoho Cliq trajectory → · Compare Roundcube vs Zoho Cliq →
3. Salesmsg · velocity 6.3
Salesmsg now runs the entire sales-to-NPS loop in one thread — outbound, AI reply, booking, survey, and routing.
Its velocity score of 6.3/10 reflects longer-term release cadence; its most recent meaningful update was “Collect and Act on Customer Feedback Right Inside Salesmsg with Surveys”.
Where Roundcube leans on security, xss and ssrf, Salesmsg focuses on sms sales, ai agents and customer feedback.
Salesmsg and Roundcube have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
Full Salesmsg trajectory → · Compare Roundcube vs Salesmsg →
4. FluentBooking · velocity 6.3
FluentBooking 2.4.0 opens the booking system to AI agents via MCP — the most directional release since the plugin launched.
Over the last 30 days FluentBooking shipped 1 meaningful update vs Roundcube's 0, most recently “Introducing MCP for AI Agents – FluentBooking 2.4.0”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Roundcube leans on security, xss and ssrf, FluentBooking focuses on mcp, ai agents and booking.
Over the last 30 days FluentBooking has been shipping faster than Roundcube — a point in its favour if release momentum matters to you.
Full FluentBooking trajectory → · Compare Roundcube vs FluentBooking →
5. Stalwart · velocity 6.3
Stalwart adds full SCIM v2 provisioning and 24-language calendar support as its standards coverage extends further than most commercial mail servers.
Over the last 30 days Stalwart shipped 1 meaningful update vs Roundcube's 0, most recently “v0.16.20”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Roundcube leans on security, xss and ssrf, Stalwart focuses on email server, scim and jmap.
Over the last 30 days Stalwart has been shipping faster than Roundcube — a point in its favour if release momentum matters to you.
Full Stalwart trajectory → · Compare Roundcube vs Stalwart →
6. Bandwidth · velocity 6.3
Bandwidth ships Identity Presentation (branded calling) in beta — trust layer for enterprise outbound calling.
Its velocity score of 6.3/10 reflects longer-term release cadence; its most recent meaningful update was “Identity Presentation – Beta”.
Where Roundcube leans on security, xss and ssrf, Bandwidth focuses on voip, communications api and rcs.
Bandwidth and Roundcube have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
Full Bandwidth trajectory → · Compare Roundcube vs Bandwidth →
7. Slack · velocity 6.3
Slack raises the Marketplace bar back to ten installs while the agent platform consolidates.
Over the last 30 days Slack shipped 1 meaningful update vs Roundcube's 0, most recently “Announcing Slack Code”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Roundcube leans on security, xss and ssrf, Slack focuses on agents, mcp and developer platform.
Over the last 30 days Slack has been shipping faster than Roundcube — a point in its favour if release momentum matters to you.
8. Rocket.Chat · velocity 6.3
Rocket.Chat finishes the 8.8 calling work while the licence wall for SSO gets a date.
Over the last 30 days Rocket.Chat shipped 1 meaningful update vs Roundcube's 0, most recently “8.8.0-rc.0: LDAP/SAML go Premium in 9.0, forced private-room E2EE”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Roundcube leans on security, xss and ssrf, Rocket.Chat focuses on team chat, voice calling and screen sharing.
Over the last 30 days Rocket.Chat has been shipping faster than Roundcube — a point in its favour if release momentum matters to you.
Full Rocket.Chat trajectory → · Compare Roundcube vs Rocket.Chat →
9. Apprise · velocity 6.3
The final v1.x release slipped by one patch, but the v2 deadline stands.
Over the last 30 days Apprise shipped 1 meaningful update vs Roundcube's 0, most recently “Last release of the v1.x line — pin before v2 breaks”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Roundcube leans on security, xss and ssrf, Apprise focuses on notifications, major version and deprecation.
Over the last 30 days Apprise has been shipping faster than Roundcube — a point in its favour if release momentum matters to you.
10. Krisp · velocity 5.0
Krisp adds deepfake detection and expands Voice Translation as its Call Center AI platform deepens enterprise compliance tools.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Roundcube leans on security, xss and ssrf, Krisp focuses on call center ai, voice translation and accent conversion.
Krisp and Roundcube have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
11. Netcore Cloud · velocity 5.0
Netcore's recent entries are blog content, not product releases — the signal is a BFSI and ecommerce vertical sales push.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Roundcube leans on security, xss and ssrf, Netcore Cloud focuses on marketing automation, bfsi and email deliverability.
Netcore Cloud and Roundcube have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
Full Netcore Cloud trajectory → · Compare Roundcube vs Netcore Cloud →
12. Canary Mail · velocity 5.0
Canary Mail ships AI chat history while sustaining a cross-platform bug fix cadence.
Its velocity score of 5.0/10 reflects longer-term release cadence.
Where Roundcube leans on security, xss and ssrf, Canary Mail focuses on email, privacy and ai chat.
Canary Mail and Roundcube have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
Full Canary Mail trajectory → · Compare Roundcube vs Canary Mail →
Frequently asked questions
What are the best alternatives to Roundcube?
The top Roundcube alternatives we currently track in team communication tools are Respond.io, Zoho Cliq, Salesmsg, FluentBooking, Stalwart, ranked by recent ship velocity.
How is this list of Roundcube alternatives ranked?
Alternatives are ranked by Sparkpulse's velocity_score — release cadence + 30-day spark count + sector-relative ship rate.
Can I compare Roundcube directly with one of these alternatives?
Yes — every card has a "Compare with Roundcube" link to a side-by-side /compare page.