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Comparison · Meetings

Fourwaves vs OpenSIPS

A side-by-side editorial comparison of Fourwaves and OpenSIPS — release velocity, themes, recent moves, and the top alternatives to consider.

Fourwaves vs OpenSIPS: at a glance

FeatureFourwavesOpenSIPS
SectorMeetingsMeetings
Velocity score5.00.0
Sparks · 30d00
Top themesevent management, organizer tools, payments, securitysip, voip, major-release, release-candidate
Last editorial update1d ago25d ago
WebsiteVisit →Visit →

What is Fourwaves?

Fourwaves follows its participant inbox with a week of admin fixes and security hardening.

Fourwaves ships small daily updates. After the Oct 19 participant DM inbox came: admins of organizations with a delegated payment gateway can connect it to events without waiting for approval, sessions without times can have presentations reordered, and a second round of fixes from an internal security audit. One entry is a header-divider style change.

Read the full Fourwaves trajectory →

What is OpenSIPS?

OpenSIPS 4.0 is in release-candidate testing, with two RCs a month apart.

OpenSIPS, the open-source SIP proxy and server, has two tracked entries: 4.0.0-rc1 in May and 4.0.0-rc2 in June 2026. Both release notes are one-line announcements, so the specific 4.0 changes are not visible in the feed.

Read the full OpenSIPS trajectory →

Fourwaves vs OpenSIPS: editorial side-by-side

F
Fourwaves
MEETINGS
5.0

Fourwaves follows its participant inbox with a week of admin fixes and security hardening.

◆ Current state

Fourwaves ships small daily updates. After the Oct 19 participant DM inbox came: admins of organizations with a delegated payment gateway can connect it to events without waiting for approval, sessions without times can have presentations reordered, and a second round of fixes from an internal security audit. One entry is a header-divider style change.

◆ Where it's heading

The product moves in two lanes: networking features for participants (DM alerts, then the inbox) and less organizer friction around payments, data tables and session scheduling. The security-audit follow-ups suggest more hardening releases are coming.

◆ Prediction

Expect more small organizer-workflow fixes and further security-audit releases. Participant messaging may get moderation or notification controls next.

O
OpenSIPS
MEETINGS
0.0

OpenSIPS 4.0 is in release-candidate testing, with two RCs a month apart.

◆ Current state

OpenSIPS, the open-source SIP proxy and server, has two tracked entries: 4.0.0-rc1 in May and 4.0.0-rc2 in June 2026. Both release notes are one-line announcements, so the specific 4.0 changes are not visible in the feed.

◆ Where it's heading

The product is moving toward a 4.0 major release through a standard RC cycle. A second RC a month after the first suggests stabilization work rather than new scope, but the entries do not say what 4.0 changes.

◆ Prediction

A 4.0.0 general release is the next expected step; what it contains cannot be read from these announcements.

Alternatives to Fourwaves and OpenSIPS

Other Meetings 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 Fourwaves or OpenSIPS.

See all Fourwaves alternatives → · See all OpenSIPS alternatives →

Recent activity from Fourwaves and OpenSIPS

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 2d agoFourwavesRegistration emails now include a calendar file
  2. 3d agoFourwavesEvent assistant now reviews all event website text
  3. 6d agoFourwavesDelegated payment gateways connect to events without approval
  4. 7d agoFourwavesHeader divider now vertical on desktop
  5. 8d agoFourwavesReorder presentations in sessions without set times
  6. 9d agoFourwavesMore security fixes from the internal audit
  7. 4mo agoOpenSIPSOpenSIPS 4.0 release candidate 2
  8. 5mo agoOpenSIPSOpenSIPS 4.0 enters release-candidate testing

Frequently asked questions

What is the difference between Fourwaves and OpenSIPS?

They serve adjacent needs but don't currently overlap on shipped themes. Fourwaves 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 Fourwaves better than OpenSIPS?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Fourwaves 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 Meetings products to evaluate alongside.

What are the best alternatives to Fourwaves?

Top Fourwaves alternatives in Meetings are ranked by recent ship velocity. Browse the "Fourwaves alternatives" section above for the current picks, or visit /alternatives/fourwaves for the full list with editorial commentary on each.

What are the best alternatives to OpenSIPS?

Top OpenSIPS alternatives in Meetings are ranked by recent ship velocity. Browse the "OpenSIPS alternatives" section above for the current picks, or visit /alternatives/opensips for the full list with editorial commentary on each.