Who is HTML (C#) for?

HTML (C#) is a B2B product built for ASP.NET and C# developers.

Yes — HTML (C#) is free to use.

What platforms does HTML (C#) run on?

HTML (C#) runs on the web, Windows, macOS, and Linux.

Is HTML (C#) still maintained?

Unverified. HTML (C#) has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What are alternatives to HTML (C#)?

Similar projects tracked by PulseGate include Haskero, Kay theme, and VSCode Archive.

HTML (C#) is developed by Fireside21.

How long has HTML (C#) been around?

HTML (C#) first shipped in 2018.

Back to the index

HTML (C#)

Name: HTML (C#)
Author: Fireside21

visualstudio.comIDEs & code editors

HTML (C#) adds Visual Studio Code language support for HTML documents containing embedded C# code. It targets ASP.NET developers working with Razor, CSHTML, ASPX, ASCX, ASAX, and related web files.

FreeWebWindowsmacOSLinux

Visit visualstudio.com

Overview

6 features

HTML (C#) is an IDEs & code editors project. It helps developers edit ASP.NET and Razor files with appropriate HTML and embedded C# language support in VS Code. It is built as a B2B product for ASP.NET and C# developers. HTML (C#) is free to use. It ships for the web, Windows, macOS, and Linux.

Fireside21 builds and maintains HTML (C#), and it first shipped in 2018. Key capabilities include syntax highlighting, C# embedding, and ASP.NET support.

Syntax highlighting
C# embedding
ASP.NET support
Razor file support
ASPX support
ASCX support

Built with & integrations

Runs on

BrowserWindowsmacOSLinux

Trust & compliance

Verified signals

HTTPSFree tierStore-verified publisher

Indexing history

What PulseGate has recorded for this listing

Indexed27 Aug · 09:57 UTC
HTML (C#) verified against its public source
Source: PulseGate · Open

Frequently asked questions about HTML (C#)

What is HTML (C#)?: HTML (C#) helps developers edit ASP.NET and Razor files with appropriate HTML and embedded C# language support in VS Code. It is catalogued under IDEs & code editors on PulseGate.
Who is HTML (C#) for?: HTML (C#) is a B2B product built for ASP.NET and C# developers.
Is HTML (C#) free?: Yes — HTML (C#) is free to use.
What platforms does HTML (C#) run on?: HTML (C#) runs on the web, Windows, macOS, and Linux.
Is HTML (C#) still maintained?: Unverified. HTML (C#) has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What are alternatives to HTML (C#)?: Similar projects tracked by PulseGate include Haskero, Kay theme, and VSCode Archive.Haskero Kay theme VSCode Archive
Who makes HTML (C#)?: HTML (C#) is developed by Fireside21.
How long has HTML (C#) been around?: HTML (C#) first shipped in 2018.

At a glance

Platforms: Web
Languages: English
First seen: 27 Aug 2026
Built for: ASP.NET and C# developers
Model: B2B
Solves: Helps developers edit ASP.NET and Razor files with appropriate HTML and embedded C# language support in VS Code.

Registered as

VS Code Marketplace: fireside21.cshtml-tm

Developer

Fireside21

Index record

Identity confidence: High · 91
Indexed: 27 Aug 2026
Lifecycle: Alive
First seen: Aug 2026
Last seen: 27 Aug 2026

Identity audit (12)

Slug: html-c-visualstudio-com
Lifecycle state recorded: 27 Aug 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 27 Aug 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Languages from: Detected by a language model from page content.
Last updated: 27 Aug 2026
Canonical URL: https://marketplace.visualstudio.com/items?itemName=fireside21.cshtml-tm

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