Agent 3Replit
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JetBrains JunieJetBrains
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About
Replit Agent 3 is the most autonomous, AI-powered builder yet for creating production-ready applications entirely through natural-language prompts. You describe the app or website idea, and Agent automatically handles everything: setting up the full-stack environment, designing interfaces, configuring databases, managing dependencies, and integrating authentication or third-party services like Stripe or OpenAI. It offers two development modes: a visual-first “Start with a design” option that generates a clickable prototype in just minutes before enabling full functionality, or a “Build the full app” mode that constructs a functioning application, including frontend, backend, and integrations, in around 10 minutes. Agent 3 also self-tests within a browser workflow, identifying bugs, fixing them, and rerunning tests in a continuous reflection loop that is up to 3x faster and 10x more cost-efficient than traditional testing models.
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About
Junie is an AI-powered coding agent developed by JetBrains designed to enhance developer productivity by integrating directly into popular IDEs such as IntelliJ IDEA, PyCharm, and Android Studio. It supports developers by assisting with code completion, testing, and inspections, ensuring code quality and reducing debugging time. Junie adapts seamlessly to your workflow, providing plans for execution and collaborating on complex coding tasks through different modes like code mode and ask mode. It understands project structure and logic, helping to find efficient solutions and maintain clean, production-ready code. Users can rely on Junie to run tests and verify changes, keeping projects stable and reducing compilation errors. With real-world examples from developers creating games and apps, Junie proves to be a versatile and intelligent assistant for coding projects of various scopes.
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Audience
Product managers in search of a solution to build, test, and deploy fully functioning apps using plain-language prompts, guided development modes, and high-autonomy AI assistance
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Audience
Junie is ideal for professional software developers and teams seeking to enhance coding productivity and quality within JetBrains IDEs through AI-powered assistance
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Support
Phone Support
24/7 Live Support
Online
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Support
Phone Support
24/7 Live Support
Online
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API
Offers API
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API
Offers API
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
$20 per month
Free Version
Free Trial
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Pricing
Free
Free Version
Free Trial
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Reviews/
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Reviews/
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Training
Documentation
Webinars
Live Online
In Person
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Training
Documentation
Webinars
Live Online
In Person
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Company InformationReplit
Founded: 2016
United States
replit.com/agent3
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Company InformationJetBrains
Founded: 2000
Czech Republic
www.jetbrains.com/junie/
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Alternatives |
Alternatives |
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Categories |
Categories |
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Application Development Features
Access Controls/Permissions
Code Assistance
Code Refactoring
Collaboration Tools
Compatibility Testing
Data Modeling
Debugging
Deployment Management
Graphical User Interface
Mobile Development
No-Code
Reporting/Analytics
Software Development
Source Control
Testing Management
Version Control
Web App Development
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Integrations
Claude Opus 4.5
GPT-5.1
GPT-5.1 Instant
GPT-5.1-Codex-Max
GPT-5.3 Instant
GPT-5.4 Pro
GPT-5.4 mini
GPT-5.6 Luna
GPT‑5.4 Thinking
Gemini 3 Deep Think
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Integrations
Claude Opus 4.5
GPT-5.1
GPT-5.1 Instant
GPT-5.1-Codex-Max
GPT-5.3 Instant
GPT-5.4 Pro
GPT-5.4 mini
GPT-5.6 Luna
GPT‑5.4 Thinking
Gemini 3 Deep Think
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