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Comparison · Mkt Auto
CartStack vs Gumloop
A side-by-side editorial comparison of CartStack and Gumloop — release velocity, themes, recent moves, and the top alternatives to consider.
CartStack vs Gumloop: at a glance
| Feature | CartStack | Gumloop |
|---|---|---|
| Sector | Mkt Auto | Mkt Auto |
| Velocity score | 0.0 | 7.5 |
| Sparks · 30d | 0 | 1 |
| Top themes | cart-recovery, email-automation, ecommerce, platform-refresh | ai agents, artifacts, agent evaluations, workflow automation |
| Last editorial update | 3mo ago | 2d ago |
| Website | Visit → | — |
What is CartStack?
A long-quiet cart-recovery tool resurfaces with a 5.0 experience refresh.
CartStack is a cart- and browse-abandonment recovery tool. Its changelog is sparse, spanning several years with long gaps, and the one recent entry is CartStack 5.0 — described as a full experience overhaul where 'everything is new' but the underlying recovery engine is unchanged. The older history shows incremental email and reporting features: webhooks, pre-send email validation, one-click unsubscribe, aggregate reporting.
What is Gumloop?
Gumloop 13.1 lets live artifacts drive agents through the SDK and opens outputs in Office.
Gumloop ships a numbered release every few days. In October it gave agents a real browser (12.0), agent-owned secrets, team sharing and embeddable AI artifacts, then 13.0 rebuilt the agent harness for longer work and added organization-wide evaluations. 13.1 lets scripts in live artifacts message, create and list agents, artifacts, skills and teams through the Gumloop SDK, opens agent-made files in Google Workspace or Microsoft Office, and lets agents on a call run long tasks in the background while they keep talking.
CartStack vs Gumloop: editorial side-by-side
CartStack
0.0MKT AUTO
A long-quiet cart-recovery tool resurfaces with a 5.0 experience refresh.
◆ Current state
CartStack is a cart- and browse-abandonment recovery tool. Its changelog is sparse, spanning several years with long gaps, and the one recent entry is CartStack 5.0 — described as a full experience overhaul where 'everything is new' but the underlying recovery engine is unchanged. The older history shows incremental email and reporting features: webhooks, pre-send email validation, one-click unsubscribe, aggregate reporting.
◆ Where it's heading
5.0 reads as a UI and platform refresh rather than a capability change — the company is explicit that the results-delivering engine stays the same. After a quiet stretch, this could signal renewed investment, but the sparse release history makes it hard to read a sustained trajectory from these entries alone.
◆ Prediction
Whether 5.0 marks a return to steady shipping or a one-off refresh is unclear from the changelog; the multi-year gaps between releases make cadence hard to predict.
Gumloop
7.5MKT AUTO
Gumloop 13.1 lets live artifacts drive agents through the SDK and opens outputs in Office.
◆ Current state
Gumloop ships a numbered release every few days. In October it gave agents a real browser (12.0), agent-owned secrets, team sharing and embeddable AI artifacts, then 13.0 rebuilt the agent harness for longer work and added organization-wide evaluations. 13.1 lets scripts in live artifacts message, create and list agents, artifacts, skills and teams through the Gumloop SDK, opens agent-made files in Google Workspace or Microsoft Office, and lets agents on a call run long tasks in the background while they keep talking.
◆ Where it's heading
The product is moving from building agents to operating them at org scale, and artifacts are turning into small apps that can control agents themselves. Model access is also being made easier to manage, with families, deprecation dates and fallback visibility.
◆ Prediction
Expect more of the SDK exposed to artifacts and further evaluation and Insights controls at the usual weekly pace; the entries don't show pricing changes.
Alternatives to CartStack and Gumloop
Other Mkt Auto 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 CartStack or Gumloop.
Activepieces
Activepieces backports October's Node.js security update to five release lines.
Buttondown
Buttondown closes an API send loophole and blocks confirmation-email floods in its daily fixes.
Formidable Forms
Formidable Forms 7.0.1 makes the builder preview reflect more Pro settings as they change.
Pimcore
Pimcore 2026.3.3.1 tightens the Twig sandbox again, two days after 2026.3.3.
SendPortal
SendPortal resurfaces with a v4 patch release, its first tag since 2020.
See all CartStack alternatives → · See all Gumloop alternatives →
Recent activity from CartStack and Gumloop
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 3d agoGumloopGumloop 13.1: artifacts drive agents via SDK, open in Office
- 6d agoGumloopGumloop 13.0: revamped agent harness and org-wide evaluations ⚡
- 10d agoGumloopGumloop 12.5: artifacts call AI models and embed on any site
- 14d agoGumloopGumloop 12.4: agent-built MCPs, multi-account apps, team sharing
- 16d agoGumloopGemini 4 Argon and Muse Wonder
- 20d agoGumloopAgent-Owned Secrets
- 4mo agoCartStackCartStack 5.0 Is Here — A New Era for Customer Recovery
- 1y agoCartStackNew Webhook: Abandoned Sequence Completed
- 1y agoCartStackPre-Email Validation
- 2y agoCartStackNew Feature: One-Click Unsubscribe
- 2y agoCartStackNew Aggregate Report Feature: Report Total
- 3y agoCartStackNew Template Library Feature: Dark Mode Preview
Frequently asked questions
What is the difference between CartStack and Gumloop?
They serve adjacent needs but don't currently overlap on shipped themes. Gumloop is currently shipping more aggressively (velocity 7.5 vs 0.0), with 1 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 CartStack better than Gumloop?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Gumloop is currently shipping more aggressively (velocity 7.5 vs 0.0), with 1 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Mkt Auto products to evaluate alongside.
What are the best alternatives to CartStack?
Top CartStack alternatives in Mkt Auto are ranked by recent ship velocity. Browse the "CartStack alternatives" section above for the current picks, or visit /alternatives/cartstack for the full list with editorial commentary on each.
What are the best alternatives to Gumloop?
Top Gumloop alternatives in Mkt Auto are ranked by recent ship velocity. Browse the "Gumloop alternatives" section above for the current picks, or visit /alternatives/gumloop for the full list with editorial commentary on each.