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Comparison · Mkt Auto
Gumloop vs Postscript
A side-by-side editorial comparison of Gumloop and Postscript — release velocity, themes, recent moves, and the top alternatives to consider.
Gumloop vs Postscript: at a glance
| Feature | Gumloop | Postscript |
|---|---|---|
| Sector | Mkt Auto | Mkt Auto |
| Velocity score | 7.5 | 0.0 |
| Sparks · 30d | 1 | 0 |
| Top themes | ai agents, artifacts, agent evaluations, workflow automation | sms-marketing, rcs, conversational-ai, agentic-automation |
| Last editorial update | 2d ago | 1mo ago |
| Website | — | Visit → |
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.
What is Postscript?
Postscript is handing SMS marketing to an agent that decides each subscriber's next message
Postscript is an SMS and RCS platform for Shopify merchants, and this archive shows it working two fronts at once. On acquisition it has multiplied the places a subscriber can opt in — embedded forms droppable on any page, standalone landing pages built on the popup editor, and Onsite Opt-in at Shoptin checkout. On messaging it is building Shopper, a conversational AI layer that now answers, analyses and increasingly initiates. The feed carries no publication dates, so this is an archive rather than a timeline.
Gumloop vs Postscript: editorial side-by-side
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.
Postscript
0.0MKT AUTO
Postscript is handing SMS marketing to an agent that decides each subscriber's next message
◆ Current state
Postscript is an SMS and RCS platform for Shopify merchants, and this archive shows it working two fronts at once. On acquisition it has multiplied the places a subscriber can opt in — embedded forms droppable on any page, standalone landing pages built on the popup editor, and Onsite Opt-in at Shoptin checkout. On messaging it is building Shopper, a conversational AI layer that now answers, analyses and increasingly initiates. The feed carries no publication dates, so this is an archive rather than a timeline.
◆ Where it's heading
The centre of gravity is shifting from campaign tooling to per-subscriber decisioning. Shopper began as a responder, then gained a research surface over its own conversations, and now decides send timing and content for each individual. Alongside that, RCS is the delivery-side bet: webviews, dynamic product photos and tappable suggested replies all work to make the message thread the destination rather than a pointer to the storefront. Experimentation is being pushed into more of the journey rather than confined to campaign sends.
◆ Prediction
Expect the remaining hand-built primitives — static flows and manual segments — to be folded into Shopper's decisioning, and each new RCS capability to keep shipping with an automatic MMS or browser fallback so merchants can adopt it without maintaining a second path.
Alternatives to Gumloop and Postscript
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 Gumloop or Postscript.
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 Gumloop alternatives → · See all Postscript alternatives →
Recent activity from Gumloop and Postscript
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
Frequently asked questions
What is the difference between Gumloop and Postscript?
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 Gumloop better than Postscript?
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 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.
What are the best alternatives to Postscript?
Top Postscript alternatives in Mkt Auto are ranked by recent ship velocity. Browse the "Postscript alternatives" section above for the current picks, or visit /alternatives/postscript for the full list with editorial commentary on each.