authentik
authentik 2026.8 ships: Actors, domain-joined Agents, and a push past browser-mediated SSO
Comparison · Infra & APIs
Cursor vs RSA
A side-by-side editorial comparison of Cursor and RSA — release velocity, themes, recent moves, and the top alternatives to consider.
Cursor vs RSA: at a glance
| Feature | Cursor | RSA |
|---|---|---|
| Sector | Infra & APIs | Infra & APIs |
| Velocity score | 8.8 | 0.0 |
| Sparks · 30d | 3 | 0 |
| Top themes | ai-agents, autonomous-agents, event-driven, cloud-agents | response-surface-analysis, psychometrics, lavaan, plotting |
| Last editorial update | 59m ago | 3h ago |
| Website | — | Visit → |
What is Cursor?
Cursor's agents stop waiting to be asked - they subscribe, and they hold a goal until it's done.
Cursor has spent two months moving agents out of the editor: cloud agents on iPhone and iPad, in Slack, on schedules, a team marketplace, a router picking the model per request, and Origin hosting repos and pull requests inside the product. This release changes how those agents are started. Cloud agents can subscribe to an event source - a PR, a Slack thread, a schedule - and wake when something happens, and /goal gives one a long-lived objective it works toward until complete. Subagents now get their own virtual machines with isolated project copies.
What is RSA?
Four years quiet, then two releases ninety seconds apart, both about drawing better plots
RSA implements response surface analysis for congruence questions in psychology, built on lavaan. After four and a half years of silence the maintainer pushed 0.10.6 and 0.10.8 within ninety seconds of each other on 2 October 2025, so the feed's version sequence is a backfill of accumulated work rather than two separate release events. Both are plotting releases: user-defined lines and points on the surface, stilts for selected data points, and separate control of point fill and border colour.
Cursor vs RSA: editorial side-by-side
Cursor
8.8INFRA · APIS
Cursor's agents stop waiting to be asked - they subscribe, and they hold a goal until it's done.
◆ Current state
Cursor has spent two months moving agents out of the editor: cloud agents on iPhone and iPad, in Slack, on schedules, a team marketplace, a router picking the model per request, and Origin hosting repos and pull requests inside the product. This release changes how those agents are started. Cloud agents can subscribe to an event source - a PR, a Slack thread, a schedule - and wake when something happens, and /goal gives one a long-lived objective it works toward until complete. Subagents now get their own virtual machines with isolated project copies.
◆ Where it's heading
The through-line has been removing external dependencies and wait states; this release removes the human from the trigger. Agents that Cursor created now subscribe to their own pull requests and drive them to completion, fixing CI and answering bot comments unprompted. Isolated per-subagent VMs are what make that safe to parallelize - swarms can work without colliding - and steering lets a person redirect a running agent at the next tool call rather than interrupting it. Cursor is building the always-on case rather than the faster-autocomplete one.
◆ Prediction
With subscriptions limited to cloud agents for now, the obvious next step is bringing event-triggered runs to local agents, along with the controls an always-on fleet needs - spend limits, approval gates, and a way to review what ran while nobody was watching.
RSA
0.0INFRA · APIS
Four years quiet, then two releases ninety seconds apart, both about drawing better plots
◆ Current state
RSA implements response surface analysis for congruence questions in psychology, built on lavaan. After four and a half years of silence the maintainer pushed 0.10.6 and 0.10.8 within ninety seconds of each other on 2 October 2025, so the feed's version sequence is a backfill of accumulated work rather than two separate release events. Both are plotting releases: user-defined lines and points on the surface, stilts for selected data points, and separate control of point fill and border colour.
◆ Where it's heading
The statistical core has been stable since 0.10.0 in 2020, which added control variables, pooled centering and a corrected AICc. Everything since is either plot customisation or a reaction to a dependency — lavaan model comparison, rgl deprecations, tkrplot on Apple Silicon, the ggplot2 fill aesthetic. This is a mature method implementation in maintenance, where the visible work is making its surface plots publishable.
◆ Prediction
Further releases are most likely dependency reactions, with rgl and ggplot2 the two that have repeatedly forced changes, and plot customisation arriving in batches whenever the maintainer returns to the package.
Alternatives to Cursor and RSA
Other Infra & APIs 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 Cursor or RSA.
Rancher
Rancher's public feed is a build-tag stream: three branches bumped the same Go image on one afternoon
Buildkite
Buildkite keeps converting hand-rolled agent workarounds into first-class CI primitives.
incident.io
Nexus does the diagnosis; the agent is now reaching into the status page too.
Warp
Warp turned its quarter of software-factory essays into infrastructure you can buy.
Okta
Okta's developer blog is a Cross App Access campaign, now diluted by advocacy-team storytelling.
Recent activity from Cursor and RSA
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 23h agoCursorCloud agents subscribe to events and hold goals on their own ⚡
- 2d agoCursorCursor starts hosting repos and pull requests ⚡
- 6d agoCursorCloud agents boot from prebuilt environment snapshots
- 21d agoCursorCursor for iPad adds full PR review and an agent inbox
- 28d agoCursorAuto mode moves to Cursor Router with cost/intelligence modes ⚡
- 1mo agoCursorCursor in Slack plans first and works across multiple repos
- 10mo agoRSAUser-defined lines and points on response surface plots
- 10mo agoRSAStilts and separate point fill and border colours in plotRSA
- 5y agoRSADemo dataset for control variables and cubic RSA; SRSQD fix
- 5y agoRSAtkrplot moved to Suggests for Apple Silicon
- 6y agoRSAFixes for R 4.0.0 stringsAsFactors and discrepancy output
- 6y agoRSAControl variables, pooled centering and a corrected AICc
Frequently asked questions
What is the difference between Cursor and RSA?
They serve adjacent needs but don't currently overlap on shipped themes. Cursor is currently shipping more aggressively (velocity 8.8 vs 0.0), with 3 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 Cursor better than RSA?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Cursor is currently shipping more aggressively (velocity 8.8 vs 0.0), with 3 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.
What are the best alternatives to Cursor?
Top Cursor alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Cursor alternatives" section above for the current picks, or visit /alternatives/cursor for the full list with editorial commentary on each.
What are the best alternatives to RSA?
Top RSA alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "RSA alternatives" section above for the current picks, or visit /alternatives/rsa for the full list with editorial commentary on each.