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 projectsServer-side web frameworks, API toolkits, GraphQL, gRPC and gateways.
Web frameworks 15
API toolkits 20
GraphQL 7
gRPC & RPC 3
Gateways & reverse proxies 2
SOAP, WCF & RPC protocols 5
HTTP Clients & Resilience
19 projectsTyped HTTP clients, REST helpers, resilience policies and HTTP mocking.
HTTP clients 10
Resilience 2
Data Access
88 projectsORMs, micro-ORMs, database drivers, migrations and document stores.
ORM & micro-ORM 23
EF Core extensions 18
Database drivers & providers 35
Migrations 6
Messaging & Event Streaming
43 projectsService buses, broker clients, event sourcing and workflow engines.
Service bus & messaging frameworks 15
Broker clients 11
Event sourcing & CQRS stores 8
Observability
49 projectsTracing, metrics, logging, health checks and diagnostics.
Tracing & metrics 18
Logging 18
Health checks & diagnostics 6
Testing
70 projectsTest frameworks, assertions, mocking, integration testing and quality tools.
Test frameworks 15
Assertions & snapshots 11
Mocking & test data 14
Integration & E2E 17
Serialization & Data Formats
45 projectsJSON, binary, YAML, CSV, TOML and schema tooling.
JSON 12
Binary 13
YAML, CSV, TOML & text 16
Application Building Blocks
65 projectsDI containers, mediators, validation, mapping, functional helpers and architecture templates.
Dependency injection 20
Mediator & CQRS 8
Validation 7
Object mapping 7
Functional & result types 16
Security & Identity
44 projectsIdentity providers, OAuth/OIDC, tokens, cryptography and authorization.
Identity providers & OIDC 17
Tokens & cryptography 18
Background Jobs & Scheduling
13 projectsJob queues, schedulers and cron helpers.
Caching & Storage
19 projectsIn-memory and distributed caches, hybrid caches and embedded key-value stores.
Caching 12
Key-value & embedded stores 7
Cloud, Infrastructure & DevOps
43 projectsCloud SDKs, serverless, orchestration, IaC, configuration and feature flags.
Cloud SDKs 12
Orchestration & infrastructure 13
Configuration & feature flags 15
Distributed Systems & Concurrency
23 projectsActor frameworks, reactive extensions, async utilities and distributed coordination.
Actors & virtual actors 5
Reactive & async 12
Coordination & testing 6
UI: Desktop, Mobile & Blazor
82 projectsCross-platform UI frameworks, Windows desktop, MVVM, Blazor component libraries and terminal UIs.
Cross-platform UI 14
Windows desktop 22
MVVM & app frameworks 15
Blazor 22
CLI & Developer Tooling
89 projectsCommand-line parsing, build automation, versioning, analyzers, formatters and decompilers.
Command-line parsing 15
Build, release & versioning 37
Analyzers & formatters 18
Compilers, decompilers & scripting 19
Source Generators & Metaprogramming
48 projectsRoslyn source generators, IL weaving, dynamic proxies and templating engines.
Source generators 19
IL weaving & proxies 17
Documents, Media & Text
92 projectsPDF, Office formats, images, HTML/Markdown processing, compression and e-mail.
PDF 12
Office documents 14
Images & graphics 19
HTML, Markdown & text 27
Compression & archives 2
E-mail & file transfer 18
AI & Machine Learning
42 projectsLLM orchestration, model clients, MCP, vector stores and classic ML.
LLM orchestration & agents 11
Model clients 8
Vector stores & search 3
Machine learning & numerics 20
Networking & Real-time
29 projectsSockets, WebSockets, real-time messaging and low-level network protocols.
Real-time & sockets 12
Low-level & protocols 17
Game Development & Graphics
30 projectsGame engines, rendering, windowing, physics and GPU compute.
Engines & frameworks 12
Rendering, windowing & compute 12
Languages, Runtime & Scripting
40 projectsThe platform itself, F#, alternative languages and embeddable scripting engines.
Platform 10
F# & functional 9
Scripting engines 13
Platforms, CMS & Notable Apps
62 projectsApplication platforms, content management, e-commerce and large open-source products built on .NET.
CMS & application platforms 16
E-commerce 7
Notable open-source apps 39
Utilities & Core Helpers
64 projectsSmall, widely used building blocks: text, identifiers, hashing, dates, units, collections and reflection.
Text, strings & formatting 17
IDs, hashing & encoding 20
Dates, time & units 13
Parsing, Expressions & Rules
30 projectsParser combinators, expression evaluators, dynamic LINQ, state machines and rules engines.
Parser combinators & generators 13
Expression evaluation & dynamic code 11
State machines & rules engines 6
SaaS & API Client SDKs
33 projectsOfficial and community clients for third-party platforms: payments, messaging, identity, developer tools and content.
Payments & commerce 7
Communication & chat 12
Developer platforms 14
Media, Charts & Geospatial
27 projectsAudio and video, charting and visualization, GIS and geocoding.
Audio & video 9
Charts & visualization 7
Interop, Patching & Deployment
23 projectsNative and cross-language interop, IL rewriting and runtime patching, installers, auto-updaters and embedded browsers.
Native & language interop 10
Installers & auto-update 9
Embedded browsers & web views 4
Finance, Blockchain & Trading
14 projectsBitcoin and Ethereum libraries, trading engines and exchange connectors.
Bitcoin, Ethereum & crypto exchanges 8
Trading & quantitative 6
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