# ASP.NET Core vs Symfony

**Leader by vioscaleAI score:** ASP.NET Core

| Attribute | ASP.NET Core | Symfony |
|---|---|---|
| **vioscaleAI score** | 71.2 (76% (high)) | 63.4 (61% (medium)) |
| activity.commits_last_30d | - | 100 |
| adoption.dependent_repos | - | 22,779 |
| adoption.github_stars | - | 31,164 |
| content.faq | `[{"answer":"A framework for building web apps and services with .NET and C#. Includes Blazor for web UI development, REST APIs, real-time communication, and AI/ML capabilities. It is indexed under Web Frameworks.","source":"https://dotnet.microsoft.com/en-us/apps/aspnet","question":"What is ASP.NET Core?","confidence":0.6},{"answer":"ASP.NET Core is open source, so it can be self-hosted and used at no licence cost. Pricing changes often, so verify at source before relying on it.","source":"https://dotnet.microsoft.com/en-us/apps/aspnet","question":"Is ASP.NET Core free to use?","confidence":0.6},{"answer":"ASP.NET Core supports the web, Windows, macOS and Linux. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://dotnet.microsoft.com/en-us/apps/aspnet","question":"What platforms does ASP.NET Core support?","confidence":0.6},{"answer":"Yes. ASP.NET Core can be deployed cloud / SaaS, hybrid, on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://dotnet.microsoft.com/en-us/apps/aspnet","question":"Can ASP.NET Core be self-hosted?","confidence":0.6},{"answer":"We have confirmed 6 integrations for ASP.NET Core, including Google, X, OpenAI, Azure, Power Apps and Power Platform. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://dotnet.microsoft.com/en-us/apps/aspnet","question":"What does ASP.NET Core integrate with?","confidence":0.6}]` | `[{"answer":"Symfony is a full-stack PHP framework offering built-in tools for routing, templating, database access, validation, email handling, testing, and security. It provides comprehensive documentation and is maintained by a large global developer community. It is indexed under Web Frameworks.","source":"https://symfony.com/","question":"What is Symfony?","confidence":0.6},{"answer":"Symfony is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Pricing changes often, so verify at source before relying on it.","source":"https://symfony.com/","question":"Is Symfony free to use?","confidence":0.6},{"answer":"Symfony supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://symfony.com/","question":"What platforms does Symfony support?","confidence":0.6},{"answer":"We have only confirmed a cloud / SaaS deployment for Symfony, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.","source":"https://symfony.com/","question":"Can Symfony be self-hosted?","confidence":0.6},{"answer":"We have confirmed 4 integrations for Symfony, including Drupal, Laravel, API Platform and Composer. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://symfony.com/","question":"What does Symfony integrate with?","confidence":0.6},{"answer":"We have independently confirmed GDPR for Symfony. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Symfony not holding them. Always confirm compliance directly before you rely on it.","source":"https://symfony.com/packages/security","question":"What security certifications does Symfony have?","confidence":0.7},{"answer":"Yes. Symfony is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/symfony/symfony","question":"Is Symfony open source?","confidence":0.95}]` |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"cloud":true}` |
| description.long | An open-source framework that extends the .NET platform with tools and libraries for creating modern, cloud-based web applications and services deployable across Windows, Linux, and macOS | A complete PHP framework that bundles routing, database mapping, templates, validation, testing, and security tools in a cohesive package for building web applications. |
| features.capabilities | `{"language":"C#","api_first":true,"api_routes":true,"async_model":"event-loop-async","orm_included":true,"openapi_autogen":true,"language_runtime":"C#/.NET","templating_included":true,"dependency_injection":true}` | `{"language":"PHP","rendering":"hybrid","api_routes":true,"license_type":"MIT/BSD","orm_included":true,"cli_scaffolding":true,"language_runtime":"PHP","architecture_style":"full-stack-mvc","templating_included":true,"testing_framework_included":true}` |
| integrations.count | 4 | 4 |
| integrations.list | `[{"name":"Google"},{"name":"X"},{"name":"OpenAI"},{"name":"Azure"},{"name":"Power Apps"},{"name":"Power Platform","native":true,"category":"platform","direction":"outbound"}]` | `[{"name":"Drupal"},{"name":"Laravel"},{"name":"API Platform"},{"name":"Composer"}]` |
| language.primary | - | PHP |
| license.spdx | - | MIT |
| market.availability | - | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"mac":true,"web":true,"linux":true,"windows":true}` | `{"cli":true,"web":true}` |
| pricing | `{"type":"free","summary":"Free and open source","freeTier":true,"sourceUrl":"https://dotnet.microsoft.com/en-us/apps/aspnet","retrievedAt":"2026-10-05T12:44:19.114Z"}` | `{"type":"open_source","summary":"Free and open source under MIT license","freeTier":true,"sourceUrl":"https://symfony.com/","retrievedAt":"2026-08-13T23:05:44.888Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | free | commercial |
| pricing.price_level | free | free |
| pricing.transparent | yes | yes |
| release.history | - | `[{"url":"https://github.com/symfony/symfony/releases/tag/v8.1.8","date":"2026-09-29T14:10:26Z","type":"stable","version":"v8.1.8"},{"url":"https://github.com/symfony/symfony/releases/tag/v7.4.20","date":"2026-09-29T14:07:34Z","type":"stable","version":"v7.4.20"},{"url":"https://github.com/symfony/symfony/releases/tag/v6.4.47","date":"2026-09-29T14:04:37Z","type":"stable","version":"v6.4.47"},{"url":"https://github.com/symfony/symfony/releases/tag/v8.1.7","date":"2026-09-15T07:15:39Z","type":"stable","version":"v8.1.7"},{"url":"https://github.com/symfony/symfony/releases/tag/v7.4.19","date":"2026-09-15T07:12:10Z","type":"stable","version":"v7.4.19"},{"url":"https://github.com/symfony/symfony/releases/tag/v6.4.46","date":"2026-09-15T07:08:48Z","type":"stable","version":"v6.4.46"},{"url":"https://github.com/symfony/symfony/releases/tag/v8.1.6","date":"2026-08-30T21:44:03Z","type":"stable","version":"v8.1.6"},{"url":"https://github.com/symfony/symfony/releases/tag/v7.4.18","date":"2026-08-30T21:39:48Z","type":"stable","version":"v7.4.18"},{"url":"https://github.com/symfony/symfony/releases/tag/v6.4.45","date":"2026-08-30T21:23:31Z","type":"stable","version":"v6.4.45"},{"url":"https://github.com/symfony/symfony/releases/tag/v8.1.5","date":"2026-08-22T13:47:37Z","type":"stable","version":"v8.1.5"},{"url":"https://github.com/symfony/symfony/releases/tag/v7.4.17","date":"2026-08-22T13:44:16Z","type":"stable","version":"v7.4.17"},{"url":"https://github.com/symfony/symfony/releases/tag/v6.4.44","date":"2026-08-22T13:40:40Z","type":"stable","version":"v6.4.44"},{"url":"https://github.com/symfony/symfony/releases/tag/v8.1.4","date":"2026-08-07T18:08:15Z","type":"stable","version":"v8.1.4"},{"url":"https://github.com/symfony/symfony/releases/tag/v7.4.16","date":"2026-08-07T18:03:30Z","type":"stable","version":"v7.4.16"},{"url":"https://github.com/symfony/symfony/releases/tag/v8.1.3","date":"2026-07-29T21:50:59Z","type":"stable","version":"v8.1.3"},{"url":"https://github.com/symfony/symfony/releases/tag/v8.1.2","date":"2026-07-29T11:58:17Z","type":"stable","version":"v8.1.2"},{"url":"https://github.com/symfony/symfony/releases/tag/v8.0.16","date":"2026-07-29T21:46:01Z","type":"stable","version":"v8.0.16"},{"url":"https://github.com/symfony/symfony/releases/tag/v8.0.15","date":"2026-07-29T11:49:08Z","type":"stable","version":"v8.0.15"},{"url":"https://github.com/symfony/symfony/releases/tag/v7.4.15","date":"2026-07-29T11:43:58Z","type":"stable","version":"v7.4.15"},{"url":"https://github.com/symfony/symfony/releases/tag/v6.4.43","date":"2026-07-29T11:39:13Z","type":"stable","version":"v6.4.43"}]` |
| security.disclosure_policy | - | yes |
| security.gdpr | - | yes |
| security.scorecard | - | 7.9 |
| security.trust_center | - | https://symfony.com/packages/security |
| security.vulnerabilities | - | `{"count":94,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=packagist&package_name=symfony%2Fsymfony&per_page=100","last_12m":31,"max_severity":"CRITICAL"}` |

## Capabilities (Web Frameworks)

| Capability | ASP.NET Core | Symfony |
|---|:--:|:--:|
| **Core** |  |  |
| Rendering model | - | Hybrid (SSR+SSG+CSR) |
| File-based routing | - | - |
| Language | C# | PHP |
| **Rendering** |  |  |
| Server components | - | - |
| Streaming SSR | - | - |
| **Fullstack** |  |  |
| Built-in API / backend routes | ✓ | ✓ |
| **DX** |  |  |
| First-class TypeScript | - | - |
| Fast refresh / HMR | - | - |
| **Deployment** |  |  |
| Edge runtime support | - | - |

*Source: vioscaleAI. Generated 2026-10-16T18:57:32.349Z. "-" = undocumented, not absent.*