IDE Extensions & Plugins

KI-Coding-Assistenten, die primär als Plugins in bestehenden Editoren und IDEs laufen.

16 tools · Last checked Sep 12, 2026

How to choose

  1. Confirm support for your editor first; JetBrains, Visual Studio and Neovim coverage varies a lot between extensions.
  2. Look at which models are included and whether you can switch providers or bring your own API key.
  3. Agent features differ widely: some only autocomplete and chat, others can edit many files and run commands.
ToolPricing & platformActions
JetBrains Junie

Junie is JetBrains' agentic coding layer across IDE and automation surfaces. It can work interactively in JetBrains products or run through terminal, GitHub, and headless CI workflows.

Editor-Erweiterungen
Free tier availableJetBrains IDEs · Terminal · GitHub Actions
Amazon Q Developer

Amazon Q Developer remains an AWS developer assistant, but its IDE plugin is now a legacy migration path to Kiro rather than the strategic destination for new IDE deployments.

Editor-Erweiterungen
Free tier availableVS Code · JetBrains IDEs · IntelliJ IDEA
Sweep AI

An AI coding agent for JetBrains developers who want repository assistance inside their existing IDE.

Editor-Erweiterungen
Free tier availableJetBrains IDEs · IntelliJ IDEA
BLACKBOX AI

A VS Code-first AI coding assistant differentiated by multi-agent orchestration, a broad hosted model catalog, and shared infrastructure across editor, CLI, and API workflows.

Editor-Erweiterungen
See pricingVS Code · Windows · macOS
Sourcegraph Cody

Sourcegraph Cody is an enterprise AI coding assistant focused on codebase-aware chat, code edits, completions, and context retrieval across large multi-repository environments.

Open source
Editor-Erweiterungen
From $16000VS Code · JetBrains IDEs · Visual Studio
Gemini Code Assist

Gemini Code Assist is Google’s AI coding assistant for IDEs, GitHub, Gemini CLI, and Google Cloud workflows, positioned as a business-friendly alternative to Copilot, Cursor, and terminal coding agents.

Editor-Erweiterungen
Free tier · From $22.8VS Code · JetBrains IDEs · IntelliJ IDEA
JetBrains AI

JetBrains AI is an IDE-native AI coding assistant and agent layer for JetBrains IDEs, positioned as an integrated alternative to standalone AI editors and generic coding extensions.

Local models
Editor-Erweiterungen
Free tier · From $10IntelliJ IDEA · PyCharm · WebStorm
Kilo Code

Kilo Code positions itself as an open-source, multi-model coding agent that spans IDE extensions, CLI, cloud agents, and team governance.

Open sourceLocal models
Editor-Erweiterungen
Free tier availableVS Code · Open VSX-compatible editors · JetBrains IDEs
Supermaven

Supermaven ist eine Legacy-KI-Code-Vervollständigungserweiterung, bekannt für schnelle, Long-Context-Autovervollständigung und wurde größtenteils nach der Übernahme in Cursor integriert.

Editor-Erweiterungen
FreeVS Code · JetBrains IDEs · Neovim
Tabnine

Tabnine is an enterprise-focused AI coding assistant and agentic platform for organizations that need private, governed, deploy-anywhere AI development workflows.

Editor-Erweiterungen
From $39VS Code · JetBrains IDEs · IntelliJ IDEA
Roo Code

Roo Code is a powerful open-source VS Code coding agent for developers who want model choice, deep customization, local control, and multi-step agentic workflows inside their editor.

Open sourceLocal models
Editor-Erweiterungen
Free tier availableVS Code · VS Code-compatible editors · macOS
Cline

Cline is an open-source, model-flexible AI coding agent for developers who want agentic file editing, command execution, browser use, MCP tools, and human-in-the-loop control inside existing development environments.

Open sourceLocal models
Editor-Erweiterungen
Free tier availableVS Code · Cursor · Windsurf
Augment Code

Augment Code is an enterprise-focused AI coding platform for teams working in large repositories, existing IDEs, terminals, and automated engineering workflows.

Editor-Erweiterungen
From $100VS Code · JetBrains IDEs · Vim
Continue

Continue ist ein Open-Source-KI-Coding-Agent und IDE-Erweiterungsökosystem mit Fokus auf konfigurierbaren Modellzugriff, repository-definierte KI-Checks und teamkontrollierte Coding-Workflows.

Open sourceLocal models
Editor-Erweiterungen
Free tier · From $3VS Code · JetBrains IDEs · CLI
GitHub Copilot

GitHub Copilot ist ein Mainstream-KI-Codeassistent und eine Entwickler-Workflow-Schicht für Teams, die KI-Unterstützung in bestehenden Editoren, GitHub-Repositories, Pull Requests und Terminal-Workflows möchten.

Editor-Erweiterungen
Free tier · From $10VS Code · Visual Studio · JetBrains IDEs
Ponytail

An agent skill and plugin that favors reuse and simpler implementation choices.

Open source
Editor-Erweiterungen
Free tier availablePlatforms not verified

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Frequently asked questions

Which Editor-Erweiterungen have a free plan?

12 of the 16 tools listed here confirm a free plan or free tier:

Which Editor-Erweiterungen are open source?

6 of the 16 tools listed here are open source:

Which Editor-Erweiterungen work with local models or your own API key?

5 support local models and 10 accept your own API key, for example:

How current is this list?

Each tool page shows when its pricing and details were last checked against official sources. The most recent check in this category was on Sep 12, 2026.