Cline alternatives for IntelliJ: 3 coding agents
Updated By Agent Radar4 min read
Short answer
Compare OpenCode, Aider and Goose as Cline alternatives for IntelliJ users, using only repo metadata and product sites checked 2026-10-14.
Top pick: OpenCode. Open source coding agent available as a terminal interface, desktop app and IDE extension. Supports 75+ LLM providers through Models.dev.
Quick comparison
Rank order is editorialOpenCode, Aider and Goose are three open-source candidates to consider instead of Cline in IntelliJ, checked 2026-10-14. OpenCode states an IDE extension, Aider states it works from within your favorite IDE or editor, and Goose's cited sources do not name any IDE integration.
Quick comparison
| Tool | Best fit (from sources) | License | Pricing as stated | Primary source |
|---|---|---|---|---|
| OpenCode | Terminal, desktop app and IDE extension; 75+ providers | MIT (GitHub API) | "Free models included"; other costs not stated | opencode.ai |
| Aider | Terminal pair programming with git auto-commits; works from within IDEs | Apache-2.0 (GitHub API) | not stated | aider.chat |
| Goose | Extensible agent that can install, execute, edit and test with any LLM | Apache-2.0 (GitHub API) | not stated | GitHub |
How the options differ
Editor surfaces
OpenCode's site says it helps you write code in your terminal, IDE, or desktop, and lists availability as a terminal interface, desktop app, and IDE extension. The cited sources do not say which IDEs the extension supports, so IntelliJ support is not stated in the cited sources.
Aider's site says you can use it from within your favorite IDE or editor and ask for changes by adding comments to your code. Its repository describes it as AI pair programming in your terminal.
Goose's repository describes an open source, extensible AI agent. Editor or IDE surfaces are not stated in the cited sources.
Model support
OpenCode says you can connect any model from any provider, lists 75+ LLM providers through Models.dev including local models, and mentions logging in with a GitHub Copilot account or ChatGPT Plus/Pro account.
Aider says it works best with several named models but can connect to almost any LLM, including local models.
Goose's repository says it works with any LLM.
Workflow features
Aider makes a map of your codebase, automatically commits changes with sensible commit messages, and can lint and test after changes.
OpenCode lists LSP loading, multi-session parallel agents and shareable session links.
Goose's repository describes going beyond code suggestions to install, execute, edit and test, and lists topics acp, ai, ai-agents and mcp.
License
The GitHub API reports MIT for OpenCode and Apache-2.0 for Aider and Goose. A repository license does not make hosted model inference free.
How we compared
We ranked by documented fit to the query: a stated IDE surface first, then model flexibility, then stated workflow features. We read the GitHub repository metadata for all three tools and the product sites for OpenCode and Aider, checked 2026-10-14. Goose has only repository metadata cited. We did not install or hands-on test any tool, and did not test IntelliJ.
Limitations
The cited sources do not name IntelliJ or JetBrains support for any tool. They give no pricing for Aider or Goose, and no direct comparison with Cline. Rankings reflect documentation only, not quality or performance.
Related: see the OpenCode hub, Aider hub, Goose hub and the guide OpenCode vs Cline vs Aider.
The picks
In rank orderOpen source coding agent available as a terminal interface, desktop app and IDE extension. Supports 75+ LLM providers through Models.dev.
Pros
- Lists an IDE extension surface
- Free models included or connect any provider
- MIT license reported by GitHub API
Cons
- Supported IDEs (including IntelliJ) not stated in the cited sources
- Pricing beyond free models not stated
Terminal AI pair programming tool that can be used from within your favorite IDE or editor. Connects to almost any LLM including local models.
Pros
- Auto-commits changes with git
- Maps the whole codebase
- Apache-2.0 license
Cons
- Specific IDE integration not stated in the cited sources
- Pricing not stated in the cited sources
Open source, extensible AI agent that goes beyond code suggestions to install, execute, edit and test with any LLM.
Pros
- Works with any LLM per repository description
- Apache-2.0 license
- Topics include mcp and acp
Cons
- IDE support not stated in the cited sources
- Pricing not stated in the cited sources
- Only repository metadata is cited
Questions
What are open source Cline alternatives?
OpenCode (MIT), Aider (Apache-2.0) and Goose (Apache-2.0) are open-source options per their GitHub API license metadata.
Is there a free Cline alternative?
OpenCode's site says free models are included or you can connect any provider. Aider and Goose pricing is not stated in the cited sources, and a repo license does not make hosted inference free.
Do these tools work in IntelliJ?
Not confirmed. OpenCode lists an IDE extension and Aider says it works from within your favorite IDE or editor, but IntelliJ is not named in the cited sources.
Which alternative supports the most models?
OpenCode states 75+ LLM providers through Models.dev, including local models. Aider says almost any LLM including local models; Goose says any LLM.
More guides
Agno vs Google ADK: agent frameworks compared
Agno vs Google ADK compared from repo metadata and docs: Agno runs agents as a service, ADK is a multi-language agent framework.
- Top pick
- Agno
- Read time
- 6 min
- Updated
Agno vs CrewAI: agent frameworks compared
Agno vs CrewAI compared from repo metadata and product sites: Agno's agent service and AgentOS layer versus CrewAI's enterprise build and runtime platform.
- Top pick
- Agno
- Read time
- 5 min
- Updated
Agno vs LangChain: agent frameworks compared
Agno vs LangChain compared from repo metadata and docs: Agno targets running agents as a service, LangChain a model-agnostic agent API.
- Top pick
- Agno
- Read time
- 3 min
- Updated
Agno vs LangGraph: agent frameworks compared
Agno vs LangGraph compared from repo metadata and docs: service layer for agents versus a durable orchestration runtime, checked 2026-10-14.
- Top pick
- Agno
- Read time
- 5 min
- Updated