# ASP.NET, release history and use on real websites. Microsoft's web framework for the .NET platform. The modern ASP.NET Core is open source and runs on Windows, Linux and macOS. - **Status:** Stable. Actively developed as ASP.NET Core with every .NET release. - **Category:** [JS/CSS Frameworks](https://be1st.ai/technologies/framework) - **First release:** 2002 - **License:** MIT (ASP.NET Core) - **Latest version:** 10.0.13 (13 Oct 2026) - **Official website:** https://dotnet.microsoft.com/apps/aspnet - **Documentation:** https://learn.microsoft.com/aspnet/core - **GitHub:** https://github.com/dotnet/aspnetcore - **Page:** https://be1st.ai/technologies/framework/asp-net ## ASP.NET on audited websites 172 of the 16,845 websites audited by be1st showed ASP.NET in the X-Powered-By response header (1.0%). Many websites hide this header, so the number counts only the ones that show it. By this count ASP.NET is #19 of the 35 technologies in JS/CSS Frameworks we have seen in audits. ### Websites running ASP.NET vs all websites - **Web score:** 66 (all websites 72) - **SEO:** 71 (all websites 79) - **Security:** 57 (all websites 59) - **Performance:** 65 (all websites 72) - **AI Readiness:** 28 (all websites 31) ### Most used in JS/CSS Frameworks 1. [Tailwind CSS](https://be1st.ai/technologies/framework/tailwind-css): 34% (5,653) 2. [jQuery](https://be1st.ai/technologies/framework/jquery): 29% (4,883) 3. [Next.js](https://be1st.ai/technologies/framework/next-js): 23% (3,836) 4. [React](https://be1st.ai/technologies/framework/react): 22% (3,626) 5. [Bootstrap](https://be1st.ai/technologies/framework/bootstrap): 13% (2,198) 6. [PHP](https://be1st.ai/technologies/framework/php): 3.0% (502) 7. [Lit](https://be1st.ai/technologies/framework/lit): 2.9% (487) 8. [Astro](https://be1st.ai/technologies/framework/astro): 2.4% (405) 9. [Vue.js](https://be1st.ai/technologies/framework/vue-js): 2.2% (373) 10. [Alpine.js](https://be1st.ai/technologies/framework/alpine-js): 2.0% (341) The number for React counts only websites where Tech Stack detects it directly, not websites built with Next.js, Gatsby, and Remix, which run it too. The number for Vue.js counts only websites where Tech Stack detects it directly, not websites built with Nuxt, which run it too. ## ASP.NET versions and release history 13 release lines since 2016, as listed by endoflife.date. The latest version is 10.0.13, released 13 Oct 2026. Supported according to endoflife.date: 10 (until 14 Nov 2028), 9 (until 10 Nov 2026), 8 (until 10 Nov 2026). ASP.NET Core ships as part of .NET, so the release lines below are .NET versions with their support dates. | Version | Released | Latest release | Support | | --- | --- | --- | --- | | 10 (LTS) | 11 Nov 2025 | 10.0.13 (13 Oct 2026) | Supported, until 14 Nov 2028 | | 9 | 12 Nov 2024 | 9.0.21 (13 Oct 2026) | Supported, until 10 Nov 2026 | | 8 (LTS) | 14 Nov 2023 | 8.0.32 (13 Oct 2026) | Supported, until 10 Nov 2026 | | 7 | 8 Nov 2022 | 7.0.20 (29 May 2024) | End of life, since 14 May 2024 | | 6 (LTS) | 8 Nov 2021 | 6.0.36 (12 Nov 2024) | End of life, since 12 Nov 2024 | | 5 | 10 Nov 2020 | 5.0.17 (10 May 2022) | End of life, since 10 May 2022 | | 3.1 (LTS) | 3 Dec 2019 | 3.1.32 (13 Dec 2022) | End of life, since 13 Dec 2022 | | 3.0 | 23 Sep 2019 | 3.0.3 (19 Feb 2020) | End of life, since 3 Mar 2020 | | 2.2 | 4 Dec 2018 | 2.2.8 (19 Nov 2019) | End of life, since 23 Dec 2019 | | 2.1 (LTS) | 30 May 2018 | 2.1.30 (19 Aug 2021) | End of life, since 21 Aug 2021 | | 2.0 | 14 Aug 2017 | 2.0.9 (10 Jul 2018) | End of life, since 1 Oct 2018 | | 1.1 | 16 Nov 2016 | 1.1.13 (15 May 2019) | End of life, since 27 Jun 2019 | | 1.0 | 27 Jun 2016 | 1.0.16 (15 May 2019) | End of life, since 27 Jun 2019 | Sources: [endoflife.date](https://endoflife.date/dotnet), checked 8 Nov 2026. ## Other technologies in JS/CSS Frameworks - [TanStack Start](https://be1st.ai/technologies/framework/tanstack-start): 1.9% of websites - [Nette](https://be1st.ai/technologies/framework/nette): 1.8% of websites - [Nuxt](https://be1st.ai/technologies/framework/nuxt): 1.5% of websites - [Angular](https://be1st.ai/technologies/framework/angular): 1.2% of websites - [Preact](https://be1st.ai/technologies/framework/preact): 1.2% of websites - [UnoCSS](https://be1st.ai/technologies/framework/unocss): 1.2% of websites - [Express](https://be1st.ai/technologies/framework/express): 1.1% of websites - [SvelteKit](https://be1st.ai/technologies/framework/sveltekit): 1.1% of websites - [Django](https://be1st.ai/technologies/framework/django): <1% of websites - [HTMX](https://be1st.ai/technologies/framework/htmx): <1% of websites - [Turbo (Hotwire)](https://be1st.ai/technologies/framework/turbo): <1% of websites - [Bulma](https://be1st.ai/technologies/framework/bulma): <1% of websites [All 38 in JS/CSS Frameworks](https://be1st.ai/technologies/framework) ## Questions about ASP.NET ### What is ASP.NET? Microsoft's web framework for the .NET platform. The modern ASP.NET Core is open source and runs on Windows, Linux and macOS. The be1st catalog lists ASP.NET under JS/CSS Frameworks. License of ASP.NET: MIT (ASP.NET Core). ### What is the latest version of ASP.NET? The latest version of ASP.NET is 10.0.13, released 13 Oct 2026 (source: endoflife.date). ### Which ASP.NET versions are still supported? According to endoflife.date, these ASP.NET release lines are supported: 10 (until 14 Nov 2028), 9 (until 10 Nov 2026), 8 (until 10 Nov 2026). ### How many websites use ASP.NET? 172 of the 16,845 websites audited by be1st (1.0%) showed ASP.NET in the X-Powered-By header, as of 8 Nov 2026. Websites that hide the header are not counted. ### When was ASP.NET first released? ASP.NET was first released in 2002; the oldest version listed by endoflife.date dates from 2016. ### Is ASP.NET still a modern choice? ASP.NET is a stable, mature choice rather than a new one. Actively developed as ASP.NET Core with every .NET release. Numbers: latest audit of each of 16,845 websites audited by be1st, as of 8 Nov 2026.