If you need to add editing to a web app, the first decision is whether you need a rich-text editor (documents, comments, CMS content) or a code editor (IDE-style editing in the browser). The main open-source options differ in how they store content, how much UI they ship, and how much you must build yourself. This guide lists the criteria that matter, then compares the leading libraries in the Stackora catalog.

Criteria to evaluate first

Before comparing products, settle these questions:

  • Editor type. Rich text (formatted prose, lists, embeds) or code (syntax highlighting, language features).
  • Output format. Some libraries emit HTML, others emit structured JSON. Your storage and rendering pipeline should decide this.
  • Framework fit. Check whether the library is framework-agnostic or tied to a specific UI framework.
  • Extensibility. Count how many built-in extensions or plugins you get, and whether you can write your own.
  • UI control. Headless libraries give you full control of markup and styling; batteries-included editors give you a working UI sooner.
  • License. Most candidates here are MIT or Apache-2.0, which permit commercial embedding. Confirm the license of any product before you adopt it.
  • Community signal. Star counts and publisher track record indicate adoption, but they do not replace testing your own use case.

Rich-text editor libraries

Tiptap

Tiptap is a headless, framework-agnostic rich text editor library for JavaScript, built on ProseMirror and extended through over 100 extensions. It is MIT-licensed and published by ueberdosis.

Strengths

  • Headless design lets you control markup and styling.
  • A large extension catalog covers common editing needs.
  • Built on ProseMirror, which has a mature document model.

Trade-offs

  • Building a polished UI means assembling extensions and styles yourself.
  • The ProseMirror foundation adds conceptual overhead for teams new to it.

Lexical

Lexical is an extensible, MIT-licensed text editor framework from Meta's facebook publisher, aimed at reliable, accessible and fast rich text editors in web apps.

Strengths

  • Designed for extensibility and accessibility.
  • Backed by a large publisher, which helps with long-term maintenance signals.

Trade-offs

  • As a framework, it expects more integration work than a ready-made editor UI.

Editor.js

Editor.js is an open-source, block-style JavaScript editor that outputs clean JSON instead of HTML markup. It is Apache-2.0 licensed and published by codex-team.

Strengths

  • JSON output suits apps that render content for web and mobile from one source.
  • Block-based model is simple to reason about for structured content.

Trade-offs

  • The block model is less suited to free-flowing, inline-heavy prose than ProseMirror-based editors.

Code editor components

Monaco Editor

Monaco Editor is an MIT-licensed browser code editor library from Microsoft, the editor core of VS Code, for embedding IDE-style editing in web apps.

Strengths

  • Provides the editing experience developers already know from VS Code.
  • Suitable for in-browser code review, configuration editing and playgrounds.

Trade-offs

  • It is a code editor, not a document editor, so it does not fit prose authoring.

Adjacent tools

These products are useful to know but are not embeddable editor components:

  • Visual Studio Code (Code - OSS) is the open-source desktop editor, listed under developer tools.
  • VSCodium is a MIT-licensed build of VS Code without Microsoft branding or telemetry.
  • GrapesJS is a web builder framework for visual HTML template editing; its license is not stated in the catalog data, so verify it before use.
  • Excalidraw is a virtual whiteboard, suited to diagrams rather than text editing.
  • Pinta is a desktop paint program and not relevant to web embedding.
  • editor is a 3D architectural editor exposing MCP tools, not a text component.

Browse libraries and SDKs for more embeddable options.

Who should pick what

  • Document, comment or CMS-style prose editing with custom UI: choose Tiptap for headless control and a large extension set, or Lexical if you want a Meta-backed framework.
  • Structured content rendered across web and mobile: choose Editor.js for its JSON block output.
  • Code editing inside a web app: choose Monaco Editor.
  • Building a visual site builder: evaluate GrapesJS, after confirming its license.

Recommendation

Start by deciding between prose and code, then pick the output format your backend can store. For most product teams adding rich text, Tiptap offers the fastest path to a custom editor, and Lexical is a strong alternative if you prefer its framework approach. For code, Monaco Editor is the clear choice. Prototype two candidates against your real content model before committing, and check each license in the catalog.