8 Best AI Tools For C# Programming in 2025

Key Features:

1️⃣ Integrations – Zencoder seamlessly integrates with over 20 developer environments, simplifying your entire development lifecycle. This makes it the only AI coding agent offering this extensive level of integration.

2️⃣ Coding Agent – Zencoder takes the hassle out of tedious debugging and complex refactoring. This intelligent assistant helps you move faster and work smarter across multiple files by:

• Quickly spotting and fixing bugs, cleaning up broken code, and smoothly handling tasks across your entire project.
• Automating repetitive or complex workflows to save you time and effort.
• Accelerating full app development so you can focus on the creative, high-impact work that truly matters.

3️⃣ Zentester – Zentester uses AI to automate testing at every level, so your team can catch bugs early and ship high-quality code faster. Just describe what you want to test in plain English, and Zentester takes care of the rest, adapting as your code evolves.

Here is what it does:

• Our intelligent agents understand your app and interact naturally across the UI, API, and database layers.
• As your code changes, Zentester automatically updates your tests, eliminating the need for constant rewriting.
• From individual unit functions to full end-to-end user flows, every layer of your app is thoroughly tested at scale.
• Zentester’s AI identifies risky code paths, uncovers hidden edge cases, and generates tests based on how real users interact with your app.

4️⃣ All-in-One AI Coding Assistant – Accelerate your development workflow with an integrated AI solution that delivers intelligent code completion, automatic code generation, and real-time code reviews.

• Code Completion – Smart code suggestions keep your momentum going with context-aware, accurate completions that reduce errors and enhance productivity.
• Code Generation – Produces clean, consistent, and production-ready code tailored to your project’s needs, perfectly aligned with your coding standards.
• Code Review Agent – Continuous code review ensures every line meets best practices, catches potential bugs, and improves security through precise, actionable feedback.

5️⃣ Zen Agents – Bring the power of Zencoder’s intelligence to your entire organization.

Zen Agents are customizable AI teammates that understand your code, integrate with your tools, and are ready to launch in seconds.

Here is what you can do:

• Build smarter – Create specialized agents for tasks like pull request reviews, testing, or refactoring, tailored to your architecture and frameworks.
• Integrate quickly – Connect to tools like Jira, GitHub, and Stripe in minutes with our no-code MCP interface, letting agents operate seamlessly within your existing workflows.
• Deploy instantly – Deploy agents across your organization with one click, with auto-updates and shared access to keep teams aligned and expertise scalable.
• Explore marketplace – Discover a growing library of open-source, pre-built agents ready to drop into your workflow. See what other developers are building, or contribute your own to help the community move faster.

6️⃣ Chat Assistant – Receive instant, reliable answers and personalized coding support. Stay productive with intelligent recommendations that keep your workflow smooth and efficient.

7️⃣ Multi-Repo Search – Index and search across multiple repositories so AI agents can understand and navigate complex multi-repo architectures. Easily add and manage repositories through the web admin panel, enabling agents to access and query all indexed code when needed.

8️⃣ Security treble – Zencoder is the only AI coding agent with SOC 2 Type II, ISO 27001 & ISO 42001 certification.

Pricing

Zencoder offers a Free Plan, a Starter Plan (free for 2 weeks) that starts at $19 per user/month, a Core Plan starting at $49 per user/month, and an Advanced Plan starting at $119 per user/month.

2. Visual Studio IntelliCode

Visual Studio IntelliCode is an AI-powered assistant integrated into Visual Studio 2022 and Visual Studio Code that boosts productivity by providing intelligent, context-aware code completions, including whole-line suggestions, for languages like C#. It improves accuracy and consistency by learning from thousands of GitHub projects and your own coding patterns, placing the most relevant suggestions at the top of IntelliSense. Additionally, IntelliCode detects repeated code edits and recommends refactorings or quick actions to streamline common tasks, making development faster and more efficient.

Key Features:

1️⃣ Whole-line code completion – Uses AI to suggest entire lines of context-aware code, improving accuracy and coding speed while keeping code local and private.

2️⃣ Contextual IntelliSense ranking – Prioritizes IntelliSense suggestions based on usage patterns from open-source code and your custom codebase for faster, smarter coding.

3️⃣ Automated repeated edits – Detects and applies similar code changes across your project, minimizing redundant edits and ensuring consistency.

4️⃣ Intelligent quick actions – Identifies common coding tasks and provides inline suggestions (e.g., generate constructor), streamlining development workflows.

Pricing

Visual Studio IntelliCode is completely free with no subscription fees or license costs.

3. Tabnine

Tabnine is an AI code assistant that accelerates C# development by providing intelligent, context-aware autocompletions and full-function suggestions directly in your IDE. It supports personalized code predictions based on your own codebase and patterns, helping reduce boilerplate and improve development speed. Tabnine also offers flexible deployment options, including on-premises and air-gapped setups, ensuring privacy without sacrificing productivity.

Key Features:

1️⃣ Code generation and completion – Converts natural language prompts and comments into accurate, context-aware code suggestions across multiple languages, including C#.

2️⃣ Code explanation – Helps you understand legacy or unfamiliar code by providing clear, AI-generated explanations.

3️⃣ Fixes and refactoring – Executes natural language instructions to fix bugs, add functionality, or clean up code structure efficiently.

4️⃣ AI-powered code review – Automatically analyzes code during development and pull requests, flagging violations of team-specific best practices and offering remediation guidance.

Pricing

Tabnine offers 2 Paid Plans starting at $9 per month.

4. Cursor

Cursor is an AI-powered code editor built on Visual Studio Code that enhances productivity by integrating intelligent coding assistance directly into the development workflow. It supports multiple programming languages, including C#, offering features like code completion, refactoring, and contextual suggestions tailored to C# syntax and conventions. Cursor also facilitates seamless collaboration and debugging, making it a useful tool for developers aiming to streamline their coding process.

Key Features:

1️⃣ Agent mode – Automates end-to-end coding tasks based on previous instructions while keeping you in control for efficient implementation.

2️⃣ Contextual understanding – Uses custom retrieval models to comprehend entire codebases, enabling accurate and relevant code suggestions without manual context input.

3️⃣ Multi-line and inline edits – Suggests and applies multi-line and inline code changes instantly, improving code quality and reducing manual editing effort.

4️⃣ Natural language terminal – Converts plain English into executable terminal commands, streamlining shell interactions and command-line workflows.

Pricing

For individuals, Cursor offers a Free Plan and 2 Paid Plans starting at $20 per month.

Cursor also offers 2 Team Plans, starting at $40 per month.

5.  Qodo

Qodo (formerly Codium) is an AI-powered code integrity platform that integrates deeply into developer workflows across IDEs, terminals, and Git, automating coding, testing, and code reviews. Its command-line tool, Qodo Command, enables you to build, run, and manage AI agents tailored to your organization's standards directly within your development environment. With support for multiple languages, including C#, Qodo helps ensure consistent, high-quality software development across the SDLC.

Key Features:

1️⃣ Code review – Automates review workflows to ensure consistent, high-quality code with AI-driven insights.

2️⃣ Code generation – Produces context-aware, production-ready code aligned with project standards and best practices.

3️⃣ Qodo embed – Delivers model-based contextual understanding and retrieval for smarter, in-editor coding assistance.

4️⃣ Refactoring – Optimizes and restructures code intelligently to enhance readability, maintainability, and performance.

Pricing

Qodo offers a Free Plan, a Teams Plan starting at $38 per month, and an Enterprise Plan with custom pricing.

AI-Powered Code Analysis and Security

6. Snyk

Snyk is an AI-powered application security platform that helps you find, prioritize, and fix vulnerabilities across the SDLC, including code, open source, containers, and infrastructure as code. Its C# support enables secure development in .NET environments through integrated static analysis and software composition analysis tailored for modern C# projects. Snyk leverages agentic AI and DeepCode models to enhance automation, speed up secure coding, and align security with business risk across development workflows.

Key Features:

1️⃣ Fast auto-fixing – Delivers pre-validated, real-time fixes for critical code issues directly in the IDE and pull requests, enabling rapid remediation.

2️⃣ High-accuracy results – Offers 80% accurate, context-aware vulnerability detection with actionable explanations to reduce false positives and boost confidence.

3️⃣ In-workflow vulnerability detection – Integrates directly into development environments, scanning code in real time within IDEs, pull requests, and CI/CD pipelines without disrupting the workflow.

4️⃣ Self-hosted AI engine – Leverages a privacy-focused, constraint-based AI engine trained on 25M+ data flows for fast, secure, and continuously learning code analysis.

Pricing

Snyk i offers a Free Plan, a Team Plan starting at $25 per month, and an Enterprise Plan with custom pricing.

7. JetBrains AI Assistant

JetBrains AI Assistant is an intelligent, context-aware coding tool integrated directly into JetBrains IDEs, supporting C# and other languages with features like smart code completion, code generation, refactoring, and inline documentation. It enhances productivity across individual and team workflows by offering tools for AI-powered unit test creation, merge conflict resolution, runtime error explanations, and multi-file edits. JetBrains AI Assistant seamlessly integrates into your development environment, streamlining tasks and helping you ship high-quality code faster.

Key Features:

1️⃣ AI-powered quick fixes – Delivers context-aware code corrections for pre-compilation issues, improving code safety and reducing manual debugging.

2️⃣ Runtime error analysis – Identifies and explains runtime failures with suggested in-place fixes to enhance stability and error traceability.

3️⃣ AI context control – Uses .aiignore to exclude sensitive files from AI processing, ensuring privacy and secure project boundaries.

4️⃣ Secure AI operations – Ensures zero data retention and SOC 2-compliant processing to meet enterprise-grade security and compliance requirements.

Pricing

For individuals, JetBrains AI Assistant offers a Free Plan and 4 Paid Plans starting at €10.00 per month.

For organizations, it offers a Free Plan and 5 Paid Plans starting at €20.00 per month.

DevOps Automation

8. Amazon Q Developer

Amazon Q Developer is a powerful AI assistant that helps accelerate software development by supporting tasks such as code review and improvement, test writing, and upgrade management for C# and .NET projects. It integrates with popular IDEs, CLI tools, and platforms, supporting DevOps workflows such as CI/CD, infrastructure as code, and operational troubleshooting. With deep AWS expertise and secure access controls, it enhances productivity while helping you optimize cloud resources and build AI-driven solutions.

Key Features:

1️⃣ Generate deployment-ready IaC – Automates the creation of infrastructure-as-code configurations, enabling consistent and repeatable cloud resource provisioning.

2️⃣ Automated code review – Performs intelligent, automated reviews of code to enforce best practices, improve quality, and accelerate delivery pipelines.

3️⃣ Investigate and remediate operational issues – Identifies and resolves production issues using AI-powered diagnostics, reducing mean time to resolution (MTTR).

4️⃣ ChatOps integration – Integrates with chat platforms to automate operational workflows and incident response through conversational interfaces.

Pricing

Amazon Q Developer offers a Free Plan and 2 Paid Plans starting at $19 per month.

Choosing The Best AI Tool For C#

Now that you’ve seen the top 8 AI tools for C# programming, it’s time to pick the one that fits your workflow. If you're looking to boost productivity with smart code suggestions and refactoring, tools like IntelliCode or Tabnine are solid choices. For security-focused teams, JetBrains AI Assistant and Snyk offer powerful code analysis and protection. However, if you're looking for an all-in-one coding agent that combines deep code understanding, automated testing, seamless integration, and enterprise-grade security, Zencoder is a perfect choice.

With Zencoder, you can:

• Get intelligent, context-aware code suggestions that help you code faster and reduce errors across your entire project.
• Automatically generate clean, production-ready code and full-stack tests tailored to your app’s unique structure.
• Let powerful AI agents handle code reviews, documentation, refactoring, and security, fully integrated with the tools you already use.

Sign in today for free and automate your development with our powerful AI features!