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JetBrains Junie

JetBrains' model-agnostic coding agent for the terminal, IDEs and CI.

Junie is JetBrains' coding agent, offered as a CLI, inside JetBrains IDEs (via Air), as a GitHub Action triggered from issues and pull requests, and in GitLab CI/CD. It supports 10+ models via bring-your-own-key and lets users plan on a strong model and implement on a faster one. Harness features include an advanced plan mode that writes editable, committable plans to .junie/plans, live prompting to steer mid-task, human-in-the-loop approvals with a dynamic allowlist, async remote-control runs monitored from a web app, and persistent custom guidelines and skills.

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Devin, the AI software engineer, and the Windsurf IDE.

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~$10.2B valuation (Sep 2025)

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The AI-native code editor where agent mode lives.

Cursor rebuilt the IDE around models: tab completion, in-editor chat and agent mode that plans multi-file edits and runs commands. Its rise set the pace for the entire coding-agent market.

~$29B valuation (late 2025)

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Droids: AI workers for software teams.

Factory's 'droids' take engineering tickets from issue to pull request, with sandboxed environments and enterprise controls — agents as members of the dev workflow.

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Connections

Relations from the Harness Hub knowledge graph, as charted in the State of Harness reports.

Similar entries · 4

Sources

  1. Junie homepage