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Comparison · Infra & APIs
Fission vs Nautobot
A side-by-side editorial comparison of Fission and Nautobot — release velocity, themes, recent moves, and the top alternatives to consider.
Fission vs Nautobot: at a glance
What is Fission?
Fission's release feed carries only RC tags, and none of them say what shipped
Every entry here is a release candidate — v1.22.0-rc1 and rc2, v1.23.0-rc1, v1.25.0-rc1 — with no final release appearing between them, and the version sequence skips 1.24 entirely. The bodies are whatever the tagging commit said, so what reaches this feed is a dependabot bump, a CLI tool-version refresh, a codegen sync explicitly labelled as having no functional change, and one entry that is nothing but links to an external release-highlights page. The actual release notes live on the project's documentation site, not here.
What is Nautobot?
Nautobot 3.3 alpha adds API rate limits while 3.2.9 stops cross-user token reads.
Nautobot's 3.2 and 2.4 lines still ship same-day security releases every two weeks. On November 9, v3.2.9 and v2.4.46 fixed a flaw where the Export Object List job let users read other users' API token keys, and closed three more ways to read fields marked sensitive. The same day v3.3.0a1 opened the next feature line with REST API rate limiting, JSON and YAML exports, primary IPs that need no interface, and a breaking change to IP assignments.
Fission vs Nautobot: editorial side-by-side
Fission
0.0INFRA · APIS
Fission's release feed carries only RC tags, and none of them say what shipped
◆ Current state
Every entry here is a release candidate — v1.22.0-rc1 and rc2, v1.23.0-rc1, v1.25.0-rc1 — with no final release appearing between them, and the version sequence skips 1.24 entirely. The bodies are whatever the tagging commit said, so what reaches this feed is a dependabot bump, a CLI tool-version refresh, a codegen sync explicitly labelled as having no functional change, and one entry that is nothing but links to an external release-highlights page. The actual release notes live on the project's documentation site, not here.
◆ Where it's heading
What can be read from these tags is infrastructure maintenance rather than product direction: Go dependency updates, helm and kind and skaffold and cosign version refreshes, and regenerated swagger and applyconfiguration files kept in sync with CEL and webhook validation comments in the core API types. That last one is the only entry hinting at anything structural — CEL-based validation on the API types implies declarative validation moving into the CRDs — but the commit itself changes only generated output.
◆ Prediction
This feed does not carry enough to predict product direction; until final releases or their notes appear here rather than only candidate tags, any read of where Fission is heading would be guesswork.
Nautobot
5.0INFRA · APIS
Nautobot 3.3 alpha adds API rate limits while 3.2.9 stops cross-user token reads.
◆ Current state
Nautobot's 3.2 and 2.4 lines still ship same-day security releases every two weeks. On November 9, v3.2.9 and v2.4.46 fixed a flaw where the Export Object List job let users read other users' API token keys, and closed three more ways to read fields marked sensitive. The same day v3.3.0a1 opened the next feature line with REST API rate limiting, JSON and YAML exports, primary IPs that need no interface, and a breaking change to IP assignments.
◆ Where it's heading
Since September the work has been a permissions and template-sandbox audit, with each release closing gaps the previous one exposed. 3.3 is the first feature line since then, and its headline additions (rate limiting, timing headers, job duration summaries, export field control) come from running Nautobot at scale and through its API.
◆ Prediction
Expect more 3.3 alphas and betas while the 3.2 and 2.4 lines keep receiving paired security releases; the sensitive-fields controls added in 3.2.5 will likely keep generating bypass fixes.
Alternatives to Fission and Nautobot
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 Fission or Nautobot.
Elasticsearch
One Node.js Brotli bug and a compromised CA bundle force ten patches across the Elastic Stack.
OpenMQTTGateway
OpenMQTTGateway returns after 22 months with a security-first 1.9.0.
Parse Server
Parse Server 9.11.1 alphas close two beforeSave advisories, one a server crash.
GitLab
GitLab sells Orbit as the evidence layer for agent pilots and AI-code rules.
Kestra
Kestra's feed is design-system package releases while 2.1.0 waits past its first RC.
See all Fission alternatives → · See all Nautobot alternatives →
Recent activity from Fission and Nautobot
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 5h agoNautobotv3.3.0a1: API rate limits, unassigned primary IPs, JSON/YAML export
- 11h agoNautobotv3.2.9: users could read other users' API token keys
- 11h agoNautobotv2.4.46: API token key leak and sensitive-field bypasses fixed
- 13d agoNautobotv3.2.8: object-visibility fixes, stored XSS and permission helpers
- 13d agoNautobotv2.4.45: visibility and XSS fixes reach the 2.4 line
- 27d agoNautobotv3.2.7: Jinja2 sandbox escape closed, regex timeouts added
- 5mo agoFissionFission 1.25.0-rc1 tag carries only regenerated codegen output
- 5mo agoFissionFission 1.23.0-rc1 tag carries a CI tool-version refresh
- 10mo agoFissionv1.22.0-rc2
- 1y agoFissionFission 1.22.0-rc1 tag carries a golang.org/x/net bump
Frequently asked questions
What is the difference between Fission and Nautobot?
They serve adjacent needs but don't currently overlap on shipped themes. Nautobot 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 Fission better than Nautobot?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Nautobot 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 Infra & APIs products to evaluate alongside.
What are the best alternatives to Fission?
Top Fission alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Fission alternatives" section above for the current picks, or visit /alternatives/fission for the full list with editorial commentary on each.
What are the best alternatives to Nautobot?
Top Nautobot alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Nautobot alternatives" section above for the current picks, or visit /alternatives/nautobot for the full list with editorial commentary on each.