Cline

Cline

Cline AI Coding Agent
OpenSpec

OpenSpec

Fission AI
+
+

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About

Cline is an open-source AI coding agent that helps developers understand, modify, and automate software development tasks directly from their IDE, terminal, or embedded applications. The platform supports coordinated code editing, bash command execution, planning, and autonomous workflows while giving developers control over every step of the process. Cline works with major AI models including Claude, GPT, Gemini, Mistral, DeepSeek, Ollama, and any OpenAI-compatible API without locking users into a single provider. Developers can use Cline to refactor large codebases, automate repetitive engineering tasks, integrate with CI/CD pipelines, and extend functionality through plugins and the Model Context Protocol (MCP). The platform also supports custom coding rules, reusable skills, multi-agent collaboration, and scheduled automations for complex software projects.

About

OpenSpec is an open-source spec-driven development framework designed to bring structure and clarity to AI-assisted coding workflows. It introduces a lightweight specification layer that helps teams define requirements before writing code. The platform organizes each change into structured artifacts such as proposals, specifications, designs, and task lists. It integrates with over 20 AI coding tools, allowing developers to use their preferred assistants while maintaining consistency. OpenSpec emphasizes an iterative and flexible approach rather than rigid development phases. Its command-based workflow enables users to propose, implement, and archive features efficiently. Overall, OpenSpec helps developers align with AI systems, reduce ambiguity, and produce more predictable and reliable outcomes.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Developers interested in an AI coding agent right inside their IDE.

Audience

Developers, product teams, and organizations using AI coding assistants who want a structured, spec-driven approach to improve clarity, collaboration, and development outcomes

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version
Free Trial

Pricing

Free
Open source
Free Version
Free Trial

Reviews/Ratings

Overall 5.0 / 5
features 5.0 / 5
design 5.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Pros & Cons from Real Users

Pros

  • Cline is one of the most useful coding agents I have tried because it feels like it lives where I already work. I do not have to copy code back and forth into a chatbot. It can inspect the project, edit files, run commands, use the browser, and walk through tasks inside the IDE. I really like the human-in-the-loop approval model. Cline can take meaningful action, but I still get to review commands, file edits, and changes before they happen. That makes it feel powerful without feeling reckless. The model flexibility is another big win. Cline is not locked to one provider, so I can bring my own key, use different models for different jobs, and experiment with cost, speed, and quality. The .clinerules support is also great for real projects. Being able to define coding standards, architecture conventions, deployment steps, and testing requirements helps Cline behave more like a teammate who understands the repo.

Cons

  • Cline can be very token-hungry if you let it roam through a big codebase without clear instructions. You need to scope tasks well, set project rules, and review what it is doing, especially on larger repos. It also still needs developer judgment. Cline can write code, run commands, and debug issues, but it can also make assumptions or take a path that is technically valid but not what you wanted. I would be careful with unknown repos, secrets, shell commands, and anything production-related. AI coding agents are powerful, but giving any tool terminal access means you need good permissions, review habits, and common sense.

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Cline AI Coding Agent
United States
cline.bot/

Company Information

Fission AI
openspec.dev/

Alternatives

JetBrains Junie

JetBrains Junie

JetBrains

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Categories

Categories

Integrations

Cursor
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C++
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GLM Coding Plan
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Gemini 1.5 Pro
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Integrations

Cursor
Devin Desktop
Butterbase
C++
Cognee
DeepSeek
GLM Coding Plan
Gemini
Gemini 1.5 Pro
Gemini Nano
Google AI Plus
Google Cloud Platform
Grok Code Fast 1
Java
Mercury Edit 2
MiMo-V2-Omni
R
Roo Code
Rust
Swift
Claim Cline and update features and information
Claim Cline and update features and information
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Claim OpenSpec and update features and information