HashIDEA

Free plan Web

What HashIDEA is

HashIDEA is a free, open-source code editor that runs in a web browser. Its Monaco editor supports React, Python, JavaScript, and TypeScript with syntax highlighting, autocomplete, and multi-file projects. Live previews are available for HTML, CSS, React, and JavaScript. Python executes in the browser through Pyodide, including imports and multi-file projects, while npm dependencies resolve through esm.sh. React and TypeScript projects can use JSX and TSX through esbuild-wasm bundling in the browser. Projects are encoded in their URLs, allowing link sharing without an account. HashIDEA can also import any public GitHub repository into the editor. The homepage says it runs entirely in the browser and does not state a security certification or compliance standard. Its Free plan costs nothing.

Who it suits

HashIDEA suits learners, developers, and teams wanting a browser-based editor for supported languages and frameworks. It is useful when projects need link sharing or public GitHub import without account creation.

What it does well

Free plan with no account required
Supports React, Python, JavaScript, and TypeScript
Real-time previews for four web technologies
Browser-based Python with imports
Share projects through encoded URLs

What to know first

Runs entirely in the browser
No stated security certification or compliance standard
Sharing uses link access

Plans

Plan	Billed and limits	Price
Free	Free online code editor; no account needed	Free

As hashideea.com lists them, read 12 Oct 2026. The maker's own page has the final word.

Verdict

HashIDEA combines a free browser editor with previews, multi-file projects, and URL-based sharing. It is a practical fit for supported web and Python work, provided browser execution matches your needs.

Facts from HashIDEA's own pages

Editor: The editor uses Monaco and supports syntax highlighting, autocomplete, and multi-file projects. · hashideea.com, 12 Oct 2026
Free plan: Yes · hashideea.com, 22 Sept 2026
GitHub import: Users can import any public GitHub repository into the editor. · hashideea.com, 12 Oct 2026
Languages: It supports React, Python, JavaScript, and TypeScript. · hashideea.com, 12 Oct 2026
Live preview: It provides real-time previews for HTML, CSS, React, and JavaScript. · hashideea.com, 12 Oct 2026
Packages: npm dependencies resolve automatically through esm.sh. · hashideea.com, 12 Oct 2026
Product: HashIDEA is a free, open-source online code editor that runs in the browser. · hashideea.com, 12 Oct 2026
Python runtime: Python code runs in the browser using Pyodide, with multi-file project and import support. · hashideea.com, 12 Oct 2026
React and TypeScript: The editor supports JSX and TSX using esbuild-wasm bundling in the browser. · hashideea.com, 12 Oct 2026
Security: The homepage says HashIDEA runs entirely in the browser; it does not state a security certification or compliance standard. · hashideea.com, 12 Oct 2026
Sharing controls: link_access · hashideea.com, 22 Sept 2026
Sharing: Projects are encoded in the URL so they can be shared by link without an account. · hashideea.com, 12 Oct 2026

Where HashIDEA stands on Freedom251

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