Fix typos and slightly rephrase landing page

index.html

@@ -59,12 +59,12 @@ <h2>
               <img src="images/gpl.svg" alt="GPLv3 logo" />
             </div>
             <div class="content">
-              <h3>Free & OpenSource</h3>
+              <h3>Free software</h3>
               <p> Mathics is licensed under 
               <a
                 href="https://github.com/mathics/Mathics/blob/master/COPYING.txt"/>
-                GPLv3</a> and it's developed by an active community of
-              volunteers. It's source code is freely available at 
+                GPLv3</a> and is developed by an active community of
+              volunteers. Its source code is freely available at 
               <a href="https://github.com/mathics/Mathics">our GitHub
                 repository</a>
               </p>
@@ -91,8 +91,8 @@ <h3>Flexible clients</h3>
               are <a href="https://github.com/Mathics3/mathicsscript">
                 mathicsscript</a> (a GNU-like CLI client) and 
               <a href="https://github.com/Mathics3/mathics-django">
-              mathics-django</a> (a Django-based web interface). We're also
-              working on a Jupyter kernel for Mathics
+              mathics-django</a> (a Django-based web interface). We are also
+              working on a Jupyter kernel for Mathics.
             </div>
           </section>
         </div>
@@ -107,7 +107,7 @@ <h2>Installation</h2>
             facilitate using the parts of you desire. This can also reduce the
             vast number of dependencies to those that you need and the
             footprint to run.  The pieces are described next with the
-            component’s OS and Python-package dependencies.
+            components' OS and Python-package dependencies.
           </p>
 
           <h3>Mathics Core</h3>
@@ -118,14 +118,13 @@ <h3>Mathics Core</h3>
 
           <p>
             If you are developing a non-interactive application written in
-            Mathics, you may no more than this.
+            Mathics, you may need no more than this.
           </p>
 
-          <h3>mathisscript</h3>
+          <h3>mathicsscript</h3>
 
           <p>
-              mathicsscript is a CLI client for Mathics. Some of it's features
-              include:
+              mathicsscript is a CLI client for Mathics. It features:
           </p>
 
           <ul>
@@ -161,9 +160,9 @@ <h3>mathisscript</h3>
           </ul>
 
           <p>
-              mathicsscript is a CLI client for Mathics. Some of it's features
-              mathicsscript can be installed via 
-              <a href="https://pypi.org/project/mathicsscript/">PyPI</a>.
+              mathicsscript is deposited on 
+              <a href="https://pypi.org/project/mathicsscript/">PyPI</a>
+              and can be installed via pip.
           </p>
 
           <h3>Mathics-Django</h3>
@@ -178,7 +177,7 @@ <h3>Mathics-Django</h3>
           </p>
 
           <p>
-              Some of its features:
+              It features:
           </p>
 
           <ul>
@@ -197,7 +196,7 @@ <h3>Mathics-Django</h3>
           </ul>
 
           <p>
-              To use this, you will need Django installed, and a browser with
+              To use this, you will need Django installed and a browser with
               JavaScript enabled.
           </p>
 
@@ -228,9 +227,9 @@ <h2>Documentation</h2>
         <h2>Support</h2>
         <div class="inner align-left">
           <p>
-            Use the Google groups 
+            Use the
             <a href="https://groups.google.com/forum/#!forum/mathics-users">
-            mathics-users</a> for discussions regarding using Mathics.
+            mathics-users</a> mailing list for discussions regarding using Mathics.
           </p>
 
           <ul>
@@ -241,9 +240,16 @@ <h2>Support</h2>
             </li>
 
             <li>
+              Code repositories for all the components and website live
+              under the
               <a href="https://github.com/mathics/">
-                GitHub mathics Organization
+                mathics
               </a>
+              and the
+              <a href="https://github.com/mathics3/">
+                Mathics3
+              </a>
+              GitHub organizations.
             </li>
           </ul>
         </div>
@@ -254,7 +260,7 @@ <h2>Support</h2>
         <h2>Contributing</h2>
         <div class="inner align-left">
           <p>
-            Please checkout our contributing guide at 
+            Please check out our contributing guide at 
             <a href="https://mathics-development-guide.readthedocs.io/en/latest/developing-code/contributing-developing.html">
             mathics-development-guide.readthedocs.io/en/latest/developing-code/contributing-developing
             </a>. <strong>Developers wanted! Please get in touch if you want