C# middleware

41 reusable middleware libraries for C#, indexed by capability.

• A* Pathfinding Project

  by Aron Granberg · Free + Pro · Free & paid · middleware

  Pathfinding system for Unity — grid, navmesh, and recast graphs with local avoidance.

  PathfindingNPC   UnityC#

• AIOffice

  by onecer · Free · github

  Give your agent an Office engine — an AI-native CLI + MCP server that creates, edits, renders & validates real .docx / .xlsx / .pptx. One self-contained C#/.NET binary, no Microsoft Office.

  AIDeveloper Tools   C#

• AppEnclave

  by COMMANDLOVE · Free · github

  Host multiple isolated ASP.NET Core apps in one process with separate DI, middleware, and configuration for each tenant using AppEnclave.

  Memory   C#

• Asp.NetCore-Fundamentals

  by 149413 · Free · github

  📚 Learn .NET Core and C# fundamentals with this practical guide on SQL, OOP, LINQ, and web development using MVC and Web API for beginners.

  APIDatabase   C#

• Auto-Translate-Clipboard

  by hasoftware · Free · github

  Lightweight Windows 11 translation tool: press a global hotkey, type text, hit Enter - the translation is copied to your clipboard instantly. Built with WinUI 3.

  Localization   C#

• BlocksBeyondTheStars

  by marceld23 · Free · github

  A block-based 3D space crafting game: explore procedurally generated planets across many star systems, mine and craft, tame creatures, build ships, bases and your own space stations — solo or with friends. Open-source .NET server + Unity client, self-hostable.

  CraftingProcedural GenerationNetworking   C#Unity

• Bowire

  by Kuestenlogik · Free · github

  Multi-protocol API workbench for .NET — discover, invoke, record, mock, replay across gRPC, REST, GraphQL, MQTT, SignalR, WebSocket, SSE, MCP, OData, Socket.IO, and more... including your custom protocol.

  APITesting   C#

• byo

  by softwareworkercom · Free · github

  BYO CLI helps developers save repeatable workflows, organize local secrets and settings, and turn messy terminal habits into reliable automation.

  Developer Tools   C#

• Casbin

  by Casbin · Free · Apache-2.0 · middleware

  Authorization library supporting access-control models like ACL, RBAC, and ABAC.

  AuthorizationSecurity   GoJavaNode.jsPythonPHPC#

• CodeyBox

  by AdamFrisby · Free · github

  Runs CLI coding agents (Claude Code, Codex, Copilot, Cursor, Gemini, opencode) against a task queue. Each works in an isolated VM; output is checked by configurable auditors, then merged via git. Pools multiple provider subscriptions with quota-aware routing and fallback. C#/.NET 10, MIT-licensed.

  AIScheduling   C#

• CortexTerminal2

  by monster-echo · Free · github

  CortermTerminal2 是一个面向 AI Coding Agent 的远程终端客户端，让你可以在手机上连接服务器，继续操作 Claude Code、Codex、Copilot 等终端任务。

  AI   C#

• CPMigrate

  by MisterDog333 · Free · github

  🚀 Modernize .NET projects easily with CPMigrate. Streamline dependency management using Central Package Management with a simple CLI tool.

  Developer Tools   C#

• CSharpCalculator

  by Kenriver · Free · github

  🔢 Build a simple console calculator in C# to perform basic arithmetic operations and handle division by zero efficiently.

  Developer Tools   C#

• Diariz

  by kenhayward · Free · github

  Self-hosted, multi-user transcription platform: record or upload audio. Speaker-labeled, timestamped transcripts, Recognize speakers across recordings, Summarize, extract action items and chat over your transcripts with your own OpenAI-compatible LLM. Your Audio, your Server, your Model. Tested on Laptop RTX4070, Desktop RTX3090 and RTX5090

  AIMemory   C#

• FastNoiseLite

  by Auburn · Free · MIT · middleware

  Fast, portable noise generation library for procedural generation (terrain, textures, worlds).

  Procedural GenerationTerrain   C++C#JavaJavaScriptPythonRust

• Flex-Installer

  by ngakan5 · Free · github

  🚀 Simplify application setup with Flex-Installer, an efficient tool for automating installation processes on multiple platforms.

  UI   C#

• Habitinator

  by tothKarolyDavid · Free · github

  A full-stack .NET 10 productivity ecosystem featuring Blazor Web and MAUI Hybrid. Demonstrates local-first SQLite sync, idempotency-backed REST APIs, Aspire orchestration, and automated E2E testing with Playwright and Testcontainers.

  Cloud   C#Web

• Https-Site-Screaper-Social-Commerce-Court-Web

  by Phyllmox · Free · github

  powerful web scraping tool designed to extract data from HTTPS-secured websites, including social media, e-commerce platforms, and court records, for analysis, monitoring, or research purposes.

  AICommerceAutomationAPI   C#Web

• Https-Site-Screaper-Social-Commerce-Court-Web

  by Synterraapt · Free · github

  powerful web scraping tool designed to extract data from HTTPS-secured websites, including social media, e-commerce platforms, and court records, for analysis, monitoring, or research purposes.

  AICommerceAutomationAPI   C#Web

• Ink

  by inkle · Free · MIT · middleware

  inkle's scripting language for writing interactive narrative, branching stories, and game dialogue.

  Dialogue   UnityWebC#

• KeyToss-Passwords-Manager-Secure-Encrypted

  by Altyaerau · Free · github

  highly secure password manager that stores and encrypts login credentials, protecting sensitive data with advanced encryption and offering safe, easy access to passwords across devices.

  Encryption   C#

• mcp-datadog

  by ajaysharmaas · Free · github

  📊 Integrate Datadog Logs, Monitors, Metrics, Incidents, and Dashboards with this Model Context Protocol (MCP) server for seamless AI assistance.

  AIMonitoring   C#

• mcp-dataset-manager

  by TolhNguyen · Free · github

  Self-hosted platform to upload Excel/CSV, query with SQL via DuckDB, and let Claude analyze your data through a built-in MCP bridge. Vietnamese header normalization included

  AIDatabase   C#

• MCPGateway

  by pokshiu · Free · github

  Unify local AITool instances and remote MCP servers into a single, searchable execution surface with a .NET 10 library.

  AI   C#

• Mirror

  by Mirror Networking · Free · MIT · middleware

  High-level networking library for Unity multiplayer games — replication, RPCs, and sync.

  Networking   UnityC#

• ONNX Runtime

  by Microsoft · Free · MIT · middleware

  Cross-platform inference and training accelerator for machine-learning models.

  Machine LearningAI   PythonC#C++JavaJavaScript

• Orbination-AI-Desktop-Vision-Control

  by Pallid-pilotballoon266 · Free · github

  Enable AI to interact with Windows apps by viewing screens, reading UI, clicking, typing, and automating tasks with OCR and window detection.

  AIAutomation   C#

• Photon Engine

  by Exit Games · Free tier + paid · Commercial · middleware

  Multiplayer networking and real-time services for games across many engines and platforms.

  Networking   UnityUnrealC#C++

• Protocol Buffers

  by Google · Free · BSD-3-Clause · middleware

  Language-neutral, platform-neutral mechanism for serializing structured data.

  SerializationAPI   C++JavaPythonGoC#JavaScript

• RSS-AI

  by byasincirakoglu · Free · github

  📡 Automate RSS feeds, summarize articles using AI, and push updates to Telegram with a simple web interface and powerful backend.

  AIMonitoring   C#

• SchemaSmith

  by Schema-Smith · Free · github

  State-based schema and code deployment for SQL Server, PostgreSQL, and MySQL

  AutomationDatabase   C#

• sqlite-multi-tenant

  by Sarmkadan · Free · github

  Multi-tenant SQLite database manager for .NET - per-tenant isolation, migrations, backups

  Database   C#

• Temur-Passwords-Manager-Keep-Safe-Windows

  by Calaestivox · Free · github

  secure password manager for Windows that stores, encrypts, and organizes login credentials, offering strong protection against unauthorized access while providing easy retrieval for authorized users.

  Encryption   C#

• TUI

  by ktsu-dev · Free · github

  A modern, extensible Text User Interface (TUI) library for .NET that provides rich terminal UI components built on Spectre.Console.

  UIDeveloper Tools   C#

• two-tier-user-management-api

  by UnagenteVld · Free · github

  🔧 Build a two-tier user management API using ASP.NET Core, featuring user CRUD operations and robust data handling with Dapper and CQRS.

  APIDatabase   C#

• unity-ai-bridge

  by aiseog3121 · Free · github

  Enable direct AI control of the Unity Editor for scene inspection, material editing, testing, and performance profiling without extra setup.

  AI   C#Unity

• unity-kiss-mcp

  by german-krasnikov · Free · github

  MCP server for controlling Unity Editor from Claude Code. TCP bridge, 98 tools, plugin system, token-optimized, in-editor chat.

  AIAnimation   C#Unity

• unityxclaude

  by agustedire542 · Free · github

  Control Unity Editor with Claude via MCP to create scenes, edit components, manage assets, run builds, and execute C# from chat

  AIAutomation   C#Unity

• universal-app-opener

  by Gimmuel · Free · github

  🌐 Convert standard HTTP URLs into Native Mobile Deep Links for platforms like YouTube and LinkedIn, enhancing user engagement across devices.

  Developer Tools   C#Angular

• xcode-claw

  by millon3720 · Free · github

  Manage iOS and macOS projects using natural language to build, test, archive, and control Xcode and Apple toolchain commands efficiently.

  Automation   C#iOS

• Yarn Spinner

  by Yarn Spinner (Secret Lab) · Free · MIT · middleware

  A tool for building interactive dialogue in games — write conversations in the Yarn language and run them in your engine.

  DialogueNPC   UnityC#