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Comparison · PM
Redmine vs Sugar Calendar
A side-by-side editorial comparison of Redmine and Sugar Calendar — release velocity, themes, recent moves, and the top alternatives to consider.
Redmine vs Sugar Calendar: at a glance
What is Redmine?
Redmine hits 7.0 with a Rails 8 jump and its first webhooks, 20 years in
Redmine is a 20-year-old open-source, Rails-based project management tool that just shipped 7.0.0 on its anniversary. The 7.0 release completes the UI modernization begun in 6.0/6.1 and adds a Rails 8 migration plus webhook event triggers. In parallel, the project keeps three older branches (5.1, 6.0, 6.1) patched with coordinated security releases.
What is Sugar Calendar?
The changelog turned into a how-to blog — capability news now arrives disguised as tutorials.
Sugar Calendar has stopped announcing numbered releases and now ships each capability as a problem-framed post. The four most recent cover emailing everyone registered for an event, designing event pages in Elementor, setting multiple ticket prices for one event, and attaching a Zoom meeting without copying links by hand. Each opens on a scenario rather than a feature name, and each body is truncated in the feed, so the capability is identifiable but its scope is not. The last numbered announcements, 3.7 and 3.6, are a year old.
Redmine vs Sugar Calendar: editorial side-by-side
Redmine
6.3PM
Redmine hits 7.0 with a Rails 8 jump and its first webhooks, 20 years in
◆ Current state
Redmine is a 20-year-old open-source, Rails-based project management tool that just shipped 7.0.0 on its anniversary. The 7.0 release completes the UI modernization begun in 6.0/6.1 and adds a Rails 8 migration plus webhook event triggers. In parallel, the project keeps three older branches (5.1, 6.0, 6.1) patched with coordinated security releases.
◆ Where it's heading
The arc is modernization plus integration: after two releases spent redesigning the interface, 7.0 resets the platform onto Rails 8 and introduces native webhooks — Redmine's first step toward the automation surface that hosted trackers already assume. The disciplined multi-branch security backporting suggests the team will keep legacy users supported rather than forcing the jump to 7.0.
◆ Prediction
Expect a 7.0.x maintenance line with bug fixes and security backports to follow the major, mirroring how 6.0 was stabilized, and incremental expansion of the new webhook triggers.
The changelog turned into a how-to blog — capability news now arrives disguised as tutorials.
◆ Current state
Sugar Calendar has stopped announcing numbered releases and now ships each capability as a problem-framed post. The four most recent cover emailing everyone registered for an event, designing event pages in Elementor, setting multiple ticket prices for one event, and attaching a Zoom meeting without copying links by hand. Each opens on a scenario rather than a feature name, and each body is truncated in the feed, so the capability is identifiable but its scope is not. The last numbered announcements, 3.7 and 3.6, are a year old.
◆ Where it's heading
The product is filling in the operational gaps around events rather than the calendar itself: attendee communication, tiered pricing, virtual meeting links, page design. That is the arc of a calendar plugin becoming event-management software, and the ticketing and email work in particular moves it toward territory held by dedicated event platforms. The editorial shift matters too — capability news written as tutorials is optimized for search rather than for existing users tracking what changed.
◆ Prediction
Expect more problem-framed posts covering individual capabilities rather than a numbered 3.8 announcement. These entries still do not say whether the Elementor, Zoom, and email work ships in core or as paid add-ons, so the packaging remains unclear.
Alternatives to Redmine and Sugar Calendar
Other PM 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 Redmine or Sugar Calendar.
Tracecat
Ten release candidates in, Tracecat is stabilising the sandbox its agents run inside
Hive
Hive keeps tightening the same three seams: planned time, admin control, and AI review scope
Akiflow
Akiflow's newest release finally adds capability, but reliability work still fills the notes.
Apploye
A time tracker whose blog argues both sides of employee monitoring, and never mentions the product.
Aha!
Aha! is threading one AI assistant through every product it owns, and giving it a screen of its own.
See all Redmine alternatives → · See all Sugar Calendar alternatives →
Recent activity from Redmine and Sugar Calendar
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 17h agoSugar CalendarEmail Everyone Who Signed Up for Your Event
- 8d agoSugar CalendarDesign Your Event Pages in Elementor
- 15d agoSugar CalendarSet Different Ticket Prices for One Event
- 23d agoSugar CalendarAdd a Zoom Meeting to Any Event Without the Link-Juggling
- 1mo agoRedmineRedmine 7.0.0 is now available ⚡
- 2mo agoRedmineRedmine 6.1.3, 6.0.10 and 5.1.13 released
- 5mo agoRedmineRedmine 6.1.2, 6.0.9 and 5.1.12 released
- 5mo agoRedmine1.4.x series
- 5mo agoRedmine1.1.x series
- 5mo agoRedmine1.2.x series
- 1y agoSugar CalendarSugar Calendar 3.7: Event Management Just Got Easier – RSVPs, Tags, Speakers and More
- 1y agoSugar CalendarIntroducing Sugar Calendar 3.6 – Enhanced Recurring Events & More Flexible Payment Options
Frequently asked questions
What is the difference between Redmine and Sugar Calendar?
They serve adjacent needs but don't currently overlap on shipped themes. Redmine is currently shipping more aggressively (velocity 6.3 vs 5.0), 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 Redmine better than Sugar Calendar?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Redmine is currently shipping more aggressively (velocity 6.3 vs 5.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other PM products to evaluate alongside.
What are the best alternatives to Redmine?
Top Redmine alternatives in PM are ranked by recent ship velocity. Browse the "Redmine alternatives" section above for the current picks, or visit /alternatives/redmine for the full list with editorial commentary on each.
What are the best alternatives to Sugar Calendar?
Top Sugar Calendar alternatives in PM are ranked by recent ship velocity. Browse the "Sugar Calendar alternatives" section above for the current picks, or visit /alternatives/sugar-calendar for the full list with editorial commentary on each.