Tolgee
Tolgee adds OAuth 2.1 for MCP clients, making agent access a first-class login path.
Comparison · Infra & APIs
Harbor vs Retool
A side-by-side editorial comparison of Harbor and Retool — release velocity, themes, recent moves, and the top alternatives to consider.
Harbor vs Retool: at a glance
What is Harbor?
Harbor 2.15 patches swap Redis for Valkey and tighten registry security.
Harbor is shipping 2.15.x patch candidates with security and dependency work. 2.15.2 replaced Redis with Valkey as the cache backend and moved to Go 1.26. 2.15.3 added a manifest upload size limit, blocked proxy-cache poisoning through robot-name prefixes and neutralised CSV formulas in scan exports. 2.15.4-rc1 relaxes two defaults that had caused regressions: webhooks can reach private networks and legacy signer pulls are allowed.
What is Retool?
Retool's agent is wiring backends now; the self-hosted release trains keep rolling underneath.
Retool's visible product work is concentrated on its app-building agent, which can now create Postgres and REST API resources from a prompt, and on day-one model support (Claude Opus 5.5, GPT 6 Luna/Sol, GPT Image 2.5). Team-plan orgs can use Retool-provided models without their own keys, and embedded apps gained custom authentication. Underneath, self-hosted customers get stable patch drops almost daily, the latest covering both 4.34 and the long-lived 4.0 line on October 8, plus an Edge cut at 4.70.
Harbor vs Retool: editorial side-by-side
Harbor
5.0INFRA · APIS
Harbor 2.15 patches swap Redis for Valkey and tighten registry security.
◆ Current state
Harbor is shipping 2.15.x patch candidates with security and dependency work. 2.15.2 replaced Redis with Valkey as the cache backend and moved to Go 1.26. 2.15.3 added a manifest upload size limit, blocked proxy-cache poisoning through robot-name prefixes and neutralised CSV formulas in scan exports. 2.15.4-rc1 relaxes two defaults that had caused regressions: webhooks can reach private networks and legacy signer pulls are allowed.
◆ Where it's heading
The patch line is closing abuse paths in a registry many teams expose internally, while walking back defaults that broke existing setups. The Valkey switch shows Harbor following the wider move off Redis after its licence change.
◆ Prediction
Expect 2.15.4 to go final with the restored defaults and a refreshed Trivy; the entries don't show what the next minor release contains.
Retool
7.5INFRA · APIS
Retool's agent is wiring backends now; the self-hosted release trains keep rolling underneath.
◆ Current state
Retool's visible product work is concentrated on its app-building agent, which can now create Postgres and REST API resources from a prompt, and on day-one model support (Claude Opus 5.5, GPT 6 Luna/Sol, GPT Image 2.5). Team-plan orgs can use Retool-provided models without their own keys, and embedded apps gained custom authentication. Underneath, self-hosted customers get stable patch drops almost daily, the latest covering both 4.34 and the long-lived 4.0 line on October 8, plus an Edge cut at 4.70.
◆ Where it's heading
The direction is agent-first app building: the agent has moved from laying out screens to provisioning data sources, and bundled models on Team remove the setup step that kept teams from trying it. Custom auth for embeds pushes the other way, toward Retool apps living inside customers' own products. Self-hosted keeps a dual-channel cadence, with stable patches for 4.34 and 4.0 and Edge every week or so, so cloud features reach on-prem with a lag.
◆ Prediction
Expect the agent to provision more resource types beyond Postgres and REST, and a 4.35 or later stable line to pick up the Edge work now landing in 4.70.
Alternatives to Harbor and Retool
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 Harbor or Retool.
ToolJet
ToolJet follows AI Builder 3 on LTS with Salesforce and signup fixes.
Tyk
Tyk's release feed is CVE dependency bumps across three maintained lines.
Keycloak
Keycloak patches its 26.4 and 26.6 lines in lockstep; the tags carry no notes.
GitHub
GitHub's Copilot push shifts to admin plumbing: billing, account controls and agent access.
Jackett
Jackett ships daily to keep hundreds of torrent indexers working as sites move.
See all Harbor alternatives → · See all Retool alternatives →
Recent activity from Harbor and Retool
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoRetoolSelf-hosted Retool 4.34 and 4.0 stable updates
- 1d agoHarbor2.15.4-rc1 restores private-network webhooks and legacy signer pulls
- 2d agoRetoolSelf-hosted Retool 4.34 stable updates
- 2d agoRetoolRetool 4.70 Edge for self-hosted instances
- 3d agoRetoolCustom authentication for embedded apps
- 7d agoRetoolNew OpenAI models available in Retool
- 7d agoRetoolCreate PostgreSQL and REST API resources with natural language
- 16d agoHarbor2.15.3-rc2: second candidate of the security patch
- 29d agoHarbor2.15.3-rc1: manifest size limit and proxy-cache poisoning fix
- 3mo agoHarbor2.15.2-rc3: Valkey replaces Redis as cache backend
- 3mo agoHarbor2.15.2-rc2: earlier candidate of the Valkey patch
Frequently asked questions
What is the difference between Harbor and Retool?
They serve adjacent needs but don't currently overlap on shipped themes. Retool is currently shipping more aggressively (velocity 7.5 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 Harbor better than Retool?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Retool is currently shipping more aggressively (velocity 7.5 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 Infra & APIs products to evaluate alongside.
What are the best alternatives to Harbor?
Top Harbor alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Harbor alternatives" section above for the current picks, or visit /alternatives/harbor for the full list with editorial commentary on each.
What are the best alternatives to Retool?
Top Retool alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Retool alternatives" section above for the current picks, or visit /alternatives/retool for the full list with editorial commentary on each.