Best Application Development Software for C# - Page 3
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Compare the Top Application Development Software that integrates with C# as of November 2025 - Page 3
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This a list of Application Development software that integrates with C#. Use the filters on the left to add additional filters for products that have integrations with C#. View the products that work with C# in the table below.
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1
Playwright
Playwright
Playwright supports all modern rendering engines including Chromium, WebKit, and Firefox. Test on Windows, Linux, and macOS, locally or on CI, headless or headed. Playwright waits for elements to be actionable prior to performing actions. It also has a rich set of introspection events. The combination of the two eliminates the need for artificial timeouts - the primary cause of flaky tests. Playwright assertions are created specifically for the dynamic web. Checks are automatically retried until the necessary conditions are met. Configure test retry strategy, capture execution trace, videos, screenshots to eliminate flakes. Browsers run web content belonging to different origins in different processes. Playwright is aligned with the modern browsers architecture and runs tests out-of-process. This makes Playwright free of the typical in-process test runner limitations.Starting Price: Free -
2
Superblocks
Superblocks
Superblocks is a programmable IDE for developers to build any internal app, workflow, or scheduled job at a fraction of the time and cost. Ship next month's roadmap this week. Quickly build apps, workflows & jobs connected to your data. Secure with granular permissions (RBAC), SSO, audit logs, and secret management in seconds. Deploy with Git and monitor production. Extend anything with code. No need to learn React, HTML, or CSS. Drag and drop components, connect them to data and make your app dynamic by triggering APIs. Build custom KYC, Compliance, AML, and credit approval tools to enable robust support processes to increase the velocity of your support team. Stop wrestling with CLIs. Quickly build admin panels for your datastores to read, write, and update your customer data with tables, forms, and charts. Clark is an AI-powered app builder that helps teams quickly create secure internal enterprise applications using their own design systems, permissions, and integrations.Starting Price: $0 per month -
3
Avalonia UI
Avalonia UI
Avalonia UI enables developers to create multi-platform apps with .NET. Write once, and run everywhere. Save time and focus on your product. Considered a spiritual successor to WPF, Avalonia UI provides a familiar developer experience, allowing you to leverage years of pre-existing knowledge and investments. rusted by JetBrains as the best framework for modernizing their WPF-based tools, used by >170,000 companies, including 431 on the Fortune 500 list. Our developer community has grown enormously as Avalonia UI has grown in popularity. Join us and be welcomed into our supportive and vibrant community.Starting Price: Free -
4
NCover
NCover
NCover Desktop is a Windows application that helps you collect code coverage statistics for .NET applications and services. After coverage is collected, Desktop displays charts and coverage metrics in a browser-based GUI that allows you to drill all the way down to your individual lines of source code. Desktop also allows you the option to install a Visual Studio extension called Bolt. Bolt offers built-in code coverage that displays unit test results, timings, branch visualization and source code highlighting right in the Visual Studio IDE. NCover Desktop is a major leap forward in the ease and flexibility of code coverage tools. Code coverage, gathered while testing your .NET code, shows the NCover user what code was exercised during the test and gives a specific measurement of unit test coverage. By tracking these statistics over time, you gain a concrete measurement of code quality during the development cycle.Starting Price: Free -
5
Refraction
Refraction
Refraction is a code-generation tool for developers. It uses AI to generate code for you. You can use it to generate unit tests, documentation, refactor code, and more. Generate code using AI in 34 languages — Assembly, C#, C++, CoffeeScript, CSS, Dart, Elixir, Erlang, Go, GraphQL, Groovy, Haskell, HTML, Java, JavaScript, Kotlin, LaTeX, Less, Lua, MatLab, Objective-C, OCaml, Perl, PHP, Python, R Lang, Ruby, Rust, Sass / SCSS, Scala, Shell, SQL, Swift, and TypeScript. Join thousands of developers around the world using Refraction to generate documentation, create unit tests, refactor code, and more using AI. Use the power of AI to automate the tedious parts of software development like testing, documentation, and refactoring, so you can focus on what matters. Refactor, optimize, fix and style-check your code. Generate unit tests for your code with various test frameworks. Explain the purpose of your code to make it easier to understand.Starting Price: $8 per month -
6
SpellBox
SpellBox
With SpellBox, you can say goodbye to hours of frustrating coding and hello to quick, easy solutions. SpellBox creates the code you need from simple prompts, so you can solve your toughest programming problems in seconds. No more time wasted on syntax errors, debugging, or scouring the internet for answers. With SpellBox, you'll have the code you need right at your fingertips, allowing you to focus on what really matters, delivering top-quality results. With the code explanation feature, you can save time by quickly gaining a deep understanding of the code you are working with, without having to spend hours researching or studying documentation. It's the perfect tool for anyone looking to improve their coding proficiency and maximize their productivity. With code bookmarking, you can save your code snippets, and quickly find what you retrieve them later. This feature is especially useful for developers who work on multiple projects and need to access their code snippets frequently.Starting Price: $40 per month -
7
Cody
Sourcegraph
Cody, Sourcegraph’s AI code assistant goes beyond individual dev productivity, helping enterprises achieve consistency and quality at scale with AI. Unlike traditional coding assistants, Cody understands the entire codebase, enabling deeper contextual awareness for smarter autocompletions, refactoring, and AI-driven code suggestions. It integrates with IDEs like VS Code, Visual Studio, Eclipse, and JetBrains, providing inline editing and chat without disrupting workflows. Cody also connects with tools like Notion, Linear, and Prometheus to enhance development context. Powered by advanced LLMs like Claude Sonnet 4 and GPT-4o, it optimizes speed and performance based on enterprise needs, and is always adding the latest AI models. Developers report significant efficiency gains, with some saving up to six hours per week and doubling their coding speed.Starting Price: $59 -
8
Mono
Mono
Cross-platform, open source .NET framework. Sponsored by Microsoft, Mono is an open-source implementation of Microsoft's .NET Framework as part of the .NET Foundation and based on the ECMA standards for C# and the common language runtime. A growing family of solutions and an active and enthusiastic contributing community is helping position Mono to become the leading choice for the development of cross-platform applications. The latest Mono release is waiting for you. We cover everything you need to know, from configuring Mono to how the internals are implemented. Our documentation is open source too, so you can help us improve it. As an open-source project, we love getting contributions from the community. File a bug report, add new code or chat with the developers. Mono is a software platform designed to allow developers to easily create cross-platform applications.Starting Price: Free -
9
Cosine Genie
Cosine
Whether it’s high-level or nuanced, Cosine can understand and provide superhuman level answers. We're not just an LLM wrapper – we combine multiple heuristics including static analysis, semantic search and others. Simply ask Cosine how to add a new feature or modify existing code and we’ll generate a step by step guide. Cosine indexes and understands your codebase on multiple levels. From a graph relationship between files and functions to a deep semantic understanding of the code, Cosine can answer any question you have about your codebase. Genie is the best AI software engineer in the world by far - achieving a 30% eval score on the industry standard benchmark SWE-Bench. Genie is able to solve bugs, build features, refactor code, and everything in between either fully autonomously or paired with the user, like working with a colleague, not just a copilot.Starting Price: $20/month -
10
Svix
Svix
Webhooks require a lot more engineering time, resources and ongoing maintenance than you would first expect. Building a secure, reliable, and scalable webhook service is hard and time consuming. We built it so you can focus on what matters most, your business. Customer endpoints fail or hang more often than you think. You need automatic retries to ensure deliverability. You need to monitor the deliverability of your webhooks to different endpoints, disable failing ones and notify your customers. Webhooks come with a myriad of security implications, such as SSRF, replay attacks and unauthenticated webhook events. You would need to build a UI for your users to add and remove endpoints, inspect logs and get ongoing reports. Offer your users a great developer experience, including the ability to test, inspect and replay their webhooks.Starting Price: $490 per month -
11
Workflow Engine
Optimajet
Embeddable .NET library for running workflows in .NET applications with integrated HTML5 graphical workflow designer. Designer allows you to easily create interactive workflows of any complexity, there’s no need to draft them programmatically. Workflow Engine is a backbone solution for business process management (BPM) which makes it feasible to automate the workflow design by using low-code visual builders. It is based on the .NET framework and JavaScript libraries. Workflow Engine enables workflow processing and correct integration by providing a graphic designer to create process workflow schemes and at the same time, this software component facilitates the management, execution, and visualization of workflow processes. Integration with solutions based on other technologies or databases is roughly the same and should not entail any difficulties. Workflow Engine offers its users all the components necessary to implement workflows of any complexity.Starting Price: $499 one-time payment -
12
DepsHub
DepsHub
Everything you need to keep your team secure and up-to-date with automatic dependency updates, license checks, and security vulnerability scanning. We process library changelogs and release notes, analyze your codebase, and automatically update your dependencies, including any breaking changes. Secure tools for effective dependency management, whether you have a team of 2 or 200. See all your dependencies in one place. No more digging through repositories. Avoid legal trouble by making sure your dependencies are licensed correctly. Get notified when a dependency has a security vulnerability. Update your code only if it affects you. DepsHub helps you save time by providing a simple and easy way to monitor and update your dependencies. We support a wide range of languages and frameworks. Use the one you love and get started in minutes. Connect your favorite tools and create tickets, be notified of new issues, and more.Starting Price: $28 per month -
13
Qodana
JetBrains
Static code analysis by Qodana helps development teams follow agreed quality standards, and deliver readable, maintainable, and secure code. Powered by JetBrains. We’ve been perfecting the code analysis in our IDEs for 20+ years based on feedback from millions of community members. Qodana relies on the lines of JetBrains IDEs and brings their intelligence to the CI side. Just like in our IDEs, Qodana’s analysis is accurate but not overbearing and understands the nuances of your code. Integration with tools developers use daily, including JetBrains IDEs, makes it easy to work with Qodana’s results in whichever tool you're most comfortable with. Qodana doesn’t only report problems; it also suggests automatic fixes. Qodana calculates licenses per active contributor, so it won’t cause unexpected expenses or charge you for growing your project (as we don’t calculate LOCs). It’s also free for open-source projects.Starting Price: $5 per month -
14
Maxium
Maxium
Going beyond lines of code or the number of commits. Teams attempting to track developer productivity are more likely to complete their assigned tasks on time. The median S&P500 company suffers from significant losses per employee due to low productivity. More than one-third of engineering leads found it difficult to measure developer efficiency accurately. Standardized evaluation mechanism, irrespective of how diverse your tech stack is, to provide an accurate measurement of shipping velocity. Get access to a custom-built dashboard to track the shipping velocity of your engineers across different teams. We standardize the code evaluation mechanism across different programming languages. We provide you with an engineer performance index by which we compare your engineers with your industry peers of the same attributes. Understand how much of your engineers' time goes to fixing bugs or unplanned work.Starting Price: Free -
15
Aider
Aider AI
Aider lets you pair program with LLMs, to edit code in your local git repository. Start a new project or work with an existing git repo. Aider works best with GPT-4o & Claude 3.5 Sonnet and can connect to almost any LLM. Aider has one of the top scores on SWE Bench. SWE Bench is a challenging software engineering benchmark where aider solved real GitHub issues from popular open source projects like django, scikitlearn, matplotlib, etc.Starting Price: Free -
16
Starcounter
Starcounter
Our ACID in-memory technology and application server enable you to build lightning-fast enterprise software. Without custom tooling or new syntax. Starcounter applications let you achieve 50 to 1000 times better performance without adding complexity. Applications are written in regular C#, LINQ, and SQL. Even the ACID transactions are written in regular C# code. Full Visual Studio support including IntelliSense, debugger, and performance profiler. All the things you like, minus the headache. Write regular C# syntax with MVVM pattern to leverage ACID in-memory technology and thin client UI for extreme performance. Starcounter technology adds business value from day one. We leverage technology that’s already developed and in production, processing millions of business transactions for high-demand customers. Starcounter combines ACID in-memory database and application server into a single platform unmatched in performance, simplicity, and price.Starting Price: Free -
17
Testmo
Testmo
Manage all your test cases, sessions & automation in Testmo. Powerful unified test management, lightning-fast UI, rich reports & integrations. Works with Jira, GitHub, GitLab & many more. The most productive test case management tool available, fully integrated. Easily manage test cases, record test results and track test runs with Testmo's flexible test case management. Fully customizable, integrated with your existing tools, and optimized for productivity. Exploratory testing, session management & note taking as first-class features in Testmo's test management platform. Manage your test sessions and ad-hoc tests for fast-release cycles and continuous delivery. Full test automation integration with your existing testing tools, CI pipelines, and build systems. Automatically submit results, track tests, and report failures. Works with any tool, language, and platform. All your test automation results are in one central place, regardless of the tools you use.Starting Price: $99 per month -
18
Speakeasy
Speakeasy
Speakeasy is a platform that enhances API integration by generating handwritten, type-safe SDKs in over nine programming languages, including TypeScript, Python, Go, Java, and C#. These SDKs improve API integration times by up to 60% by eliminating the need for users to write boilerplate code, reducing common implementation errors, and expanding API accessibility across various programming communities. The platform also simplifies the creation of Terraform providers, allowing for the definition of resources and operations, automatic validation from OpenAPI specifications, and handling complex API landscapes. Additionally, Speakeasy offers end-to-end testing workflows to enforce API standards and protect against breaking changes, as well as SDK documentation that remains up-to-date with compilable usage snippets for every SDK method. Trusted by top API companies, Speakeasy's solutions are designed to provide robust SDKs, Terraform providers, and comprehensive testing tools.Starting Price: $250 per month -
19
Kakoune
Kakoune
Kakoune is a highly efficient, modal text editor that focuses on real-time feedback and powerful, intuitive multi-selection capabilities. Inspired by Vim but offering its own distinct approach to modal editing, Kakoune prioritizes a selection-based workflow that makes text manipulation feel natural and fluid. Instead of commands operating on cursors, commands operate on selections, allowing users to edit and navigate with precision and speed. Kakoune features robust multi-caret editing, context-aware autocompletion, and extensive language support, with performance optimized for working with large files and complex codebases. Designed to be scriptable and extendable with shell commands, Kakoune integrates smoothly with UNIX tools, giving users flexibility in customization. Known for its responsiveness and adaptability, Kakoune is ideal for developers who prefer a keyboard-driven interface and appreciate real-time, immediate feedback in their editing workflow.Starting Price: Free -
20
PaizaCloud
PaizaCloud
On PaizaCloud Cloud IDE, you can operate Linux servers in your browser. You can manage and edit files, run commands, or start a web server/database server, all in a browser alone. You don't need to use troublesome commands to log in, edit files, or upload files anymore. You can operate Linux servers on the cloud just like a computer in front of you. Your new Linux server environment will be set up in just 3 seconds. You can copy an existing server environment, and you can also freely operate multiple Linux servers. Because the new server is set up instantly, you can challenge installing or developing software without worrying about breaking down. All you need is a browser to use your workspace environment from any PC or Mac. You can use the same workspace environment from anywhere without always having to carry the same computer around. For programming schools, coding boot camps, universities, and colleges, students can use the same development environment at school and at home.Starting Price: $9.80 per month -
21
NSwag
Rico Suter
NSwag is a comprehensive Swagger/OpenAPI 2.0 and 3.0 toolchain for .NET, .NET Core, ASP.NET Core, and TypeScript, written in C#. It enables developers to generate OpenAPI specifications from existing API controllers and create client code from these specifications. NSwag combines functionalities similar to Swashbuckle (for OpenAPI/Swagger generation) and AutoRest (for client generation) into a single toolchain, eliminating the need for both. Key features include the ability to generate Swagger 2.0 and OpenAPI 3.0 specifications from C# ASP.NET (Core) controllers, serve these specifications via ASP.NET (Core) middleware with integrated Swagger UI or ReDoc, and generate C# or TypeScript clients/proxies from the specifications. NSwag offers multiple usage methods, including a user-friendly Windows GUI (NSwagStudio), command-line interfaces compatible with Windows, Mac, and Linux, and integration into C# code via NuGet packages.Starting Price: Free -
22
REST United
REST United
REST United is a platform that simplifies the process of generating Software Development Kits (SDKs) for REST APIs across multiple programming languages, including PHP, Python, Ruby, ActionScript (Flash), C#, Android, Objective-C, Scala, and Java. In just five simple steps, users can create SDKs accompanied by highly customizable documentation featuring easy-to-follow example code, enhancing developer engagement. The platform also leverages the Postman Chrome plug-in to facilitate testing and debugging of REST APIs, streamlining the development workflow. For those designing their own REST APIs using frameworks like Node.js, Ruby Sinatra, Scala Scalatra, or Java JAX-RS, REST United offers assistance in generating server-side code. Support is readily available, with the promise of responses within 12 hours to any inquiries. Overall, REST United aims to make REST API development more accessible and efficient by providing tools that bridge the gap between API design and implementation.Starting Price: $1 per month -
23
Defang
Defang
Defang is a developer-centric platform that simplifies the process of developing, deploying, and debugging cloud applications. By leveraging AI-assisted tooling, Defang enables developers to swiftly transition from an idea to a deployed application on their preferred cloud provider. The platform supports multiple programming languages, including Go, JavaScript, and Python, allowing developers to start with sample projects or generate project outlines using natural language prompts. With a single command, Defang builds and deploys applications, handling configurations for computing, storage, load balancing, networking, logging, and security. The Defang Command Line Interface (CLI) facilitates interactions with the platform, offering installation options via shell scripts, Homebrew, Winget, Nix, or direct download. Developers can define services using compose.yaml files, which Defang utilizes to deploy applications to the cloud.Starting Price: $10 per month -
24
Duckly
Duckly
Duckly enables you to talk and share your code in real time with developers using any IDE. Duckly is an IDE plugin that facilitates real-time code collaboration among developers using different integrated development environments. It enables users to share code, terminal sessions, and local servers, while also providing audio and video communication directly within the IDE. All connections are peer-to-peer and end-to-end encrypted, ensuring secure collaboration. By integrating these features, Duckly streamlines pair programming, code reviews, and team collaboration, enhancing productivity and reducing the need for multiple external tools. Talk with audio, and video and share your screen directly inside of your IDE. Share your code in real time with people using a different IDE than you. Share your local server with your team and let them see the changes in real time. All connections are peer-to-peer and end-to-end encrypted.Starting Price: $6 per month -
25
GitHub Advanced Security
GitHub
With AI-powered remediation, static analysis, secret scanning, and software composition analysis, GitHub Advanced Security helps developers and security teams work together to eliminate security debt and keep new vulnerabilities out of code. Code scanning with Copilot Autofix detects vulnerabilities, provides contextual explanations, and suggests fixes in the pull request and for historical alerts. Solve your backlog of application security debt. Security campaigns target and generate autofixes for up to 1,000 alerts at a time, rapidly reducing the risk of application vulnerabilities and zero-day attacks. Secret scanning with push protection guards over 200 token types and patterns from more than 150 service providers, even elusive secrets like passwords and PII. Powered by security experts and a global community of more than 100 million developers, GitHub Advanced Security provides the insights and automation you need to ship more secure software on schedule.Starting Price: $49 per month per user -
26
Opengrep
Opengrep
Opengrep is an open-source static code analysis engine designed to identify security vulnerabilities within codebases. As a fork of Semgrep, it maintains a similar focus on providing fast and powerful code pattern search capabilities across more than 30 programming languages, including Python, JavaScript, and Go. Opengrep enables developers to define custom rules for pattern matching, facilitating the detection of potential security issues and promoting adherence to coding standards. By integrating Opengrep into the development workflow, teams can proactively address vulnerabilities, thereby enhancing the overall security and reliability of their software projects.Starting Price: Free -
27
PlayerIO
PlayerIO
PlayerIO provides a robust suite of tools and services tailored for developers of online games, allowing them to focus on creating engaging experiences without worrying about backend complexities. The platform includes powerful features like a cloud-based database for scalable data storage, a file storage system for asset management, and comprehensive hosting solutions. It also supports multiplayer game functionalities and offers extensive analytics, virtual economy systems, and easy integration with multiple payment gateways, positioning itself as a one-stop solution for game development needs.Starting Price: $24.95 per month -
28
MonoGame
MonoGame
MonoGame is a free and open-source framework that allows developers to create cross-platform games using C# and other .NET languages. It supports multiple platforms, including Windows, macOS, Linux, Android, iOS, PlayStation 4, PlayStation 5, Xbox One, and Nintendo Switch. MonoGame provides a comprehensive set of features, such as 2D and 3D rendering, sound playback, input handling, and content management, enabling the development of high-quality games across various genres. The framework is a re-implementation of Microsoft's XNA 4 API, ensuring familiarity for developers with XNA experience. Notable games developed with MonoGame include "Streets of Rage 4," "Carrion," "Celeste," and "Stardew Valley." MonoGame is actively maintained by the MonoGame Foundation and its community, with ongoing updates and support.Starting Price: Free -
29
raylib
raylib
raylib is a simple and easy-to-use library to enjoy video game programming. It is a programming library to enjoy video game programming; no fancy interface, no visual helpers, no GUI tools or editors, just coding in a pure spartan-programmers way. raylib does not provide the typical API documentation or a big set of tutorials. The library is designed to be minimalistic and be learned just from a cheat sheet with all required functionality and a big collection of examples to see how to use that functionality. The best way to learn to code is by reading code. raylib supports multiple target platforms, it has been tested in the following ones but, technically, any platform that supports C language and OpenGL graphics (or similar) can run raylib or it can be very easily ported to. You can use raylib with multiple programming languages, there are over 60 bindings. raylib can be combined with several extra libraries for additional functionality.Starting Price: Free -
30
Kiro
Amazon Web Services
Kiro is an AI‑powered integrated development environment that brings structure to AI‑driven coding by converting natural‑language prompts into clear requirements, system designs, and discrete implementation tasks validated by robust tests. Built from the ground up for agentic workflows, it features spec‑driven development, multimodal chat, “agent hooks” that trigger background tasks on events like file saves, and an autopilot mode that autonomously runs large scripts while keeping you in control. With smart context management, Kiro reduces repetitive prompts and helps implement complex features across large codebases. Native MCP integrations let you connect to documentation, databases, and APIs, and you can guide development with images of UI designs or architecture diagrams. Enterprise‑grade security and privacy ensure safe deployment, while support for Claude Sonnet models, Open VSX plugins, and existing VS Code settings delivers a familiar yet AI‑supercharged experience.Starting Price: $19 per month
