.N .NET Landscape

The .NET Ecosystem Landscape

1278 open-source projects across 28 categories, from web frameworks and HTTP clients to messaging, observability, testing and AI. Click any tile for details. Greyed-out tiles are archived, legacy or inactive (no commits for 2+ years).

Projects
1278
Stars
3.7M
Downloads
134.3B
Updated
24 Oct 2026

Web Frameworks & APIs

52 projects

Server-side web frameworks, API toolkits, GraphQL, gRPC and gateways.

HTTP Clients & Resilience

19 projects

Typed HTTP clients, REST helpers, resilience policies and HTTP mocking.

Data Access

88 projects

ORMs, micro-ORMs, database drivers, migrations and document stores.

Messaging & Event Streaming

43 projects

Service buses, broker clients, event sourcing and workflow engines.

Observability

49 projects

Tracing, metrics, logging, health checks and diagnostics.

Testing

70 projects

Test frameworks, assertions, mocking, integration testing and quality tools.

Serialization & Data Formats

45 projects

JSON, binary, YAML, CSV, TOML and schema tooling.

Application Building Blocks

65 projects

DI containers, mediators, validation, mapping, functional helpers and architecture templates.

Security & Identity

44 projects

Identity providers, OAuth/OIDC, tokens, cryptography and authorization.

Background Jobs & Scheduling

13 projects

Job queues, schedulers and cron helpers.

Caching & Storage

19 projects

In-memory and distributed caches, hybrid caches and embedded key-value stores.

Cloud, Infrastructure & DevOps

43 projects

Cloud SDKs, serverless, orchestration, IaC, configuration and feature flags.

Distributed Systems & Concurrency

23 projects

Actor frameworks, reactive extensions, async utilities and distributed coordination.

UI: Desktop, Mobile & Blazor

82 projects

Cross-platform UI frameworks, Windows desktop, MVVM, Blazor component libraries and terminal UIs.

CLI & Developer Tooling

89 projects

Command-line parsing, build automation, versioning, analyzers, formatters and decompilers.

Source Generators & Metaprogramming

48 projects

Roslyn source generators, IL weaving, dynamic proxies and templating engines.

Documents, Media & Text

92 projects

PDF, Office formats, images, HTML/Markdown processing, compression and e-mail.

AI & Machine Learning

42 projects

LLM orchestration, model clients, MCP, vector stores and classic ML.

Networking & Real-time

29 projects

Sockets, WebSockets, real-time messaging and low-level network protocols.

Game Development & Graphics

30 projects

Game engines, rendering, windowing, physics and GPU compute.

Languages, Runtime & Scripting

40 projects

The platform itself, F#, alternative languages and embeddable scripting engines.

Platforms, CMS & Notable Apps

62 projects

Application platforms, content management, e-commerce and large open-source products built on .NET.

Utilities & Core Helpers

64 projects

Small, widely used building blocks: text, identifiers, hashing, dates, units, collections and reflection.

Parsing, Expressions & Rules

30 projects

Parser combinators, expression evaluators, dynamic LINQ, state machines and rules engines.

SaaS & API Client SDKs

33 projects

Official and community clients for third-party platforms: payments, messaging, identity, developer tools and content.

Media, Charts & Geospatial

27 projects

Audio and video, charting and visualization, GIS and geocoding.

Interop, Patching & Deployment

23 projects

Native and cross-language interop, IL rewriting and runtime patching, installers, auto-updaters and embedded browsers.

Finance, Blockchain & Trading

14 projects

Bitcoin and Ethereum libraries, trading engines and exchange connectors.

Kamil Kiełbasa

From the maintainer

Need a senior .NET architect on your side?

Kamil Kiełbasa · IT consultant, software architect and trainer

“I design architecture that survives production.”

I help teams make the hard technical decisions: Domain-Driven Design and architecture, .NET, cloud and DevOps. Over a decade in IT, nine AWS and Azure certifications, speaker at Warsaw IT Days, 4Developers and MS Tech Summit, co-host of the Paper Driven Design podcast.

  • Consulting: code and architecture audits with a written report
  • Workshops: multi-day, hands-on, tailored to your team (DDD, Event Storming, Event Sourcing)
  • Mentoring: 1:1 sessions for developers and tech leads
  • Talks and webinars for conferences, meetups and internal events