sigtrace-dev · AnujGupta578 · Jul 25, 2026 · Jul 25, 2026 · Jul 25, 2026
diff --git a/LICENSE b/LICENSE
@@ -1,21 +1,21 @@
-MIT License
+Elastic License v2.0
 
 Copyright (c) 2025 SigTrace Contributors
 
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
+Acceptance
+By using, modifying, or distributing the software, you agree to the terms of this license.
 
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
+Copyright Grant
+Subject to the terms of this license, Licensor grants you a non-exclusive, worldwide, royalty-free copyright license to use, copy, modify, and distribute the software.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+Limitations
+You may not:
+1. Provide the software to third parties as a hosted or managed service, where the service provides the user with access to any substantial portion of the functionality of the software;
+2. Circumvent the license key functionality or remove/alter any licensing, copyright, or other notices; or
+3. Move, change, remove, or obscure any copyright, trademark, or other notices in the software.
+
+Patents
+Subject to the terms of this license, Licensor grants you a non-exclusive, worldwide, royalty-free patent license under any patent claims Licensor owns or has the right to license that are necessarily infringed by the software.
+
+Disclaimer
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/README.md b/README.md
@@ -10,7 +10,7 @@
 <p>
   <a href="https://www.npmjs.com/package/@sigtrace/core"><img src="https://img.shields.io/npm/v/@sigtrace/core?color=6C63FF&style=flat-square&label=npm%20%40sigtrace%2Fcore" alt="npm version" /></a>
   <a href="https://marketplace.visualstudio.com/items?itemName=sigtrace.sigtrace-extension"><img src="https://img.shields.io/visual-studio-marketplace/d/sigtrace.sigtrace-extension?color=007ACC&style=flat-square&label=VS%20Code%20installs" alt="VS Code installs" /></a>
-  <a href="https://github.com/sigtrace-dev/sigtrace/blob/main/LICENSE"><img src="https://img.shields.io/badge/license-MIT-22c55e?style=flat-square" alt="License MIT" /></a>
+  <a href="https://github.com/sigtrace-dev/sigtrace/blob/main/LICENSE"><img src="https://img.shields.io/badge/license-ELv2-22c55e?style=flat-square" alt="License ELv2" /></a>
   <a href="https://github.com/sigtrace-dev/sigtrace/actions/workflows/ci.yml"><img src="https://img.shields.io/github/actions/workflow/status/sigtrace-dev/sigtrace/ci.yml?branch=main&style=flat-square&label=CI&color=6C63FF" alt="CI status" /></a>
   <a href="https://github.com/sponsors/sigtrace-dev"><img src="https://img.shields.io/badge/Sponsor-%E2%9D%A4-ea4aaa?style=flat-square&logo=github-sponsors" alt="Sponsor on GitHub" /></a>
 </p>
@@ -227,7 +227,10 @@ See [**CHANGELOG.md**](./CHANGELOG.md) for a detailed history of changes across
 
 ## 📄 License
 
-SigTrace is open-source software released under the [**MIT License**](./LICENSE).
+SigTrace is released under the [**Elastic License 2.0 (ELv2)**](./LICENSE).
+
+- **Allowed**: Free for everyone (individuals, startups, and commercial enterprises) to use, modify, and run in development and production workflows.
+- **Prohibited**: You may not provide SigTrace to third parties as a hosted or managed commercial service, or sell competing developer tools derived directly from this repository.
 
 Copyright © 2025 SigTrace Contributors.
 

diff --git a/docs/blog/index.html b/docs/blog/index.html
@@ -204,7 +204,7 @@ <h2 class="post-title">Introducing SigTrace: The Missing Debugger for Reactive S
 
 <footer role="contentinfo">
   <div class="container">
-    <p>© 2025 SigTrace Contributors. Released under the MIT License.</p>
+    <p>© 2025 SigTrace Contributors. Released under the Elastic License 2.0 (ELv2).</p>
   </div>
 </footer>
 

diff --git a/docs/blog/introducing-sigtrace.html b/docs/blog/introducing-sigtrace.html
@@ -220,8 +220,8 @@ <h2>Quick Start</h2>
 # or
 npx sigtrace run npm run dev  # Vue / SolidJS</code></pre>
 
-      <h2>Open Source and Community-Driven</h2>
-      <p>SigTrace is licensed under the MIT License and is free to use, modify, and distribute. We believe that developer experience should not be locked behind proprietary paywalls. The core adapters for Angular, Vue, and SolidJS are all open-source, and we are planning Svelte and React support next.</p>
+      <h2>Free for Developers & Enterprise</h2>
+      <p>SigTrace is licensed under the Elastic License 2.0 (ELv2) and is completely free for all developers, teams, and organizations to use and modify in development and production workflows. The only restriction is that third parties cannot provide SigTrace as a managed commercial service or sell competing derivative tools built directly from this repository. The core adapters for Angular, Vue, and SolidJS are all available, and we are planning Svelte and React support next.</p>
 
       <p>Check out the <a href="https://github.com/sigtrace-dev/sigtrace" style="color:var(--accent-light)">GitHub Repository</a>, star the project, and join the community!</p>
     </article>
@@ -230,7 +230,7 @@ <h2>Open Source and Community-Driven</h2>
 
 <footer>
   <div class="container">
-    <p>© 2025 SigTrace Contributors. Released under the MIT License.</p>
+    <p>© 2025 SigTrace Contributors. Released under the Elastic License 2.0 (ELv2).</p>
   </div>
 </footer>
 

diff --git a/docs/blog/react-svelte-signals-debugging.html b/docs/blog/react-svelte-signals-debugging.html
@@ -245,7 +245,7 @@ <h2>Getting Started in 2 Minutes</h2>
 
 <footer>
   <div class="container">
-    <p>© 2025 SigTrace Contributors. Released under the MIT License.</p>
+    <p>© 2025 SigTrace Contributors. Released under the Elastic License 2.0 (ELv2).</p>
   </div>
 </footer>
 

diff --git a/docs/docs/index.html b/docs/docs/index.html
@@ -139,7 +139,7 @@ <h1>Documentation Coming Soon</h1>
 
 <footer role="contentinfo">
   <div class="container">
-    <p>© 2025 SigTrace Contributors. Released under the MIT License.</p>
+    <p>© 2025 SigTrace Contributors. Released under the Elastic License 2.0 (ELv2).</p>
   </div>
 </footer>
 

diff --git a/docs/index.html b/docs/index.html
@@ -72,7 +72,7 @@
         "softwareVersion": "1.1.6",
         "datePublished": "2025-01-01",
         "dateModified": "2026-07-16",
-        "license": "https://opensource.org/licenses/MIT",
+        "license": "https://www.elastic.co/licensing/elastic-license",
         "author": {
           "@type": "Organization",
           "name": "SigTrace Contributors",
@@ -175,10 +175,10 @@
           },
           {
             "@type": "Question",
-            "name": "Is SigTrace free and open source?",
+            "name": "Is SigTrace free to use?",
             "acceptedAnswer": {
               "@type": "Answer",
-              "text": "Yes. SigTrace is completely free and open source under the MIT license. Its editor extensions, npm packages, and CLI are all free to use, modify, and distribute."
+              "text": "Yes. SigTrace is free for all developers and organizations under the Elastic License 2.0 (ELv2). You can freely use, modify, and run it in development and production workflows."
             }
           }
         ]
@@ -1713,7 +1713,7 @@
       <div class="hero-badge fade-up">
         <span class="label-pill">
           <svg width="12" height="12" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" aria-hidden="true"><polygon points="12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2"/></svg>
-          Open Source · v1.1.6 · MIT License
+          ELv2 License · v1.1.6 · Free to Use
         </span>
       </div>
 
@@ -1841,8 +1841,8 @@ <h2 id="stats-heading" class="sr-only">SigTrace by the numbers</h2>
         <div class="stat-label">Avg. Instrumentation Overhead</div>
       </div>
       <div class="stat-cell" role="listitem">
-        <div class="stat-value">MIT</div>
-        <div class="stat-label">Open Source License</div>
+        <div class="stat-value">ELv2</div>
+        <div class="stat-label">Fair Source License</div>
       </div>
     </div>
   </div>
@@ -2310,7 +2310,7 @@ <h2 id="faq-heading">Frequently asked questions</h2>
           <svg class="faq-chevron" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" aria-hidden="true"><polyline points="6 9 12 15 18 9"/></svg>
         </button>
         <div class="faq-a" role="region">
-          <div class="faq-a-inner">SigTrace is 100% free and open source under the MIT license. All packages and editor extensions are free forever. The source code is available on GitHub and contributions are welcome.</div>
+          <div class="faq-a-inner">SigTrace is free for all developers, teams, and organizations under the Elastic License 2.0 (ELv2). You can use and modify SigTrace freely. The only restriction is that third parties cannot provide SigTrace as a managed commercial service or sell competing derivative tools built directly from this code.</div>
         </div>
       </div>
 
@@ -2334,7 +2334,7 @@ <h2 id="faq-heading">Frequently asked questions</h2>
   <div class="container">
     <div class="cta-box">
       <div class="cta-glow" aria-hidden="true"></div>
-      <span class="label-pill" style="margin-bottom:24px">Free & Open Source</span>
+      <span class="label-pill" style="margin-bottom:24px">Free for Developers & Enterprise</span>
       <h2 id="cta-heading">Debug your reactive state<br />in minutes, not hours</h2>
       <p>Install SigTrace and get full visibility into your signal graph — for free, forever.</p>
       <div class="cta-actions">
@@ -2381,7 +2381,7 @@ <h2 id="cta-heading">Debug your reactive state<br />in minutes, not hours</h2>
 
       <div class="footer-legal">
         <p>© 2025 SigTrace Contributors</p>
-        <p>Released under the <a href="https://github.com/sigtrace-dev/sigtrace/blob/main/LICENSE" target="_blank" rel="noopener" style="color:var(--accent-light)">MIT License</a></p>
+        <p>Released under the <a href="https://github.com/sigtrace-dev/sigtrace/blob/main/LICENSE" target="_blank" rel="noopener" style="color:var(--accent-light)">Elastic License 2.0 (ELv2)</a></p>
       </div>
     </div>
   </div>

diff --git a/packages/core/package.json b/packages/core/package.json
@@ -17,7 +17,7 @@
   },
   "homepage": "https://sigtrace.dev",
   "author": "SigTrace Contributors",
-  "license": "MIT",
+  "license": "ELv2",
   "exports": {
     ".": "./dist/index.js",
     "./solid": "./dist/adapters/solid.js",

diff --git a/packages/vite-plugin/package.json b/packages/vite-plugin/package.json
@@ -17,7 +17,7 @@
   },
   "homepage": "https://sigtrace.dev",
   "author": "SigTrace Contributors",
-  "license": "MIT",
+  "license": "ELv2",
   "keywords": [
     "reactivity",
     "signals",