diff --git a/wise-webapp/src/main/java/com/wisemapping/model/Mindmap.java b/wise-webapp/src/main/java/com/wisemapping/model/Mindmap.java
new file mode 100644
index 00000000..e2eb0dad
--- /dev/null
+++ b/wise-webapp/src/main/java/com/wisemapping/model/Mindmap.java
@@ -0,0 +1,275 @@
+/*
+*    Copyright [2011] [wisemapping]
+*
+*   Licensed under WiseMapping Public License, Version 1.0 (the "License").
+*   It is basically the Apache License, Version 2.0 (the "License") plus the
+*   "powered by wisemapping" text requirement on every single page;
+*   you may not use this file except in compliance with the License.
+*   You may obtain a copy of the license at
+*
+*       http://www.wisemapping.org/license
+*
+*   Unless required by applicable law or agreed to in writing, software
+*   distributed under the License is distributed on an "AS IS" BASIS,
+*   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*   See the License for the specific language governing permissions and
+*   limitations under the License.
+*/
+
+package com.wisemapping.model;
+
+import com.wisemapping.exceptions.WiseMappingException;
+import com.wisemapping.util.ZipUtils;
+import org.apache.commons.lang.StringEscapeUtils;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.HashSet;
+import java.util.Set;
+
+public class Mindmap {
+    private static final String UTF_8 = "UTF-8";
+
+    //~ Instance fields ......................................................................................
+    private int id;
+    private Calendar creationTime;
+    private String description;
+
+    private boolean isPublic;
+    private Calendar lastModificationTime;
+    private User lastEditor;
+
+    private Set<Collaboration> collaborations = new HashSet<Collaboration>();
+
+    private User creator;
+    private String tags;
+    private String title;
+    private byte[] xml;
+
+    //~ Constructors .........................................................................................
+
+    public Mindmap() {
+    }
+
+    //~ Methods ..............................................................................................
+
+    public void setXml(byte[] xml) {
+        this.xml = xml;
+    }
+
+    public void setXmlStr(@NotNull String xml)
+            throws IOException {
+        this.xml = xml.getBytes(UTF_8);
+    }
+
+    public byte[] getXml() {
+        return xml;
+    }
+
+    public String getXmlStr() throws UnsupportedEncodingException {
+        String result = null;
+        if (this.xml != null) {
+            result = new String(this.xml, UTF_8);
+        }
+        return result;
+    }
+
+    public byte[] getZippedXml()
+            throws IOException {
+        byte[] result = this.xml;
+        if (result != null) {
+            result = ZipUtils.stringToZip(new String(result, UTF_8));
+        }
+        return result;
+    }
+
+    public void setZippedXml(byte[] xml)
+            throws IOException {
+        this.xml = ZipUtils.zipToString(xml).getBytes(UTF_8);
+    }
+
+    public Set<Collaboration> getCollaborations() {
+        return collaborations;
+    }
+
+    public void setCollaborations(Set<Collaboration> collaborations) {
+        this.collaborations = collaborations;
+    }
+
+    public void addCollaboration(@NotNull Collaboration collaboration) {
+        collaborations.add(collaboration);
+    }
+
+    public void removedCollaboration(@NotNull Collaboration collaboration) {
+        collaborations.add(collaboration);
+    }
+
+    @Nullable
+    public Collaboration findCollaboration(@NotNull Collaborator collaborator) {
+        return this.findCollaboration(collaborator.getEmail());
+    }
+
+    @Nullable
+    public Collaboration findCollaboration(@NotNull String email) {
+        Collaboration result = null;
+        for (Collaboration collaboration : collaborations) {
+            if (collaboration.getCollaborator().getEmail().equals(email)) {
+                result = collaboration;
+                break;
+            }
+        }
+        return result;
+    }
+
+    public boolean isPublic() {
+        return isPublic;
+    }
+
+    public void setPublic(boolean isPublic) {
+        this.isPublic = isPublic;
+    }
+
+    public Calendar getLastModificationTime() {
+        return lastModificationTime;
+    }
+
+    public Date getLastModificationDate() {
+        return new Date();
+    }
+
+    public void setLastModificationTime(Calendar lastModificationTime) {
+        this.lastModificationTime = lastModificationTime;
+    }
+
+    @Nullable
+    public User getLastEditor() {
+        return lastEditor;
+    }
+
+    public void setLastEditor(@Nullable User lastEditor) {
+        this.lastEditor = lastEditor;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public String getXmlAsJsLiteral()
+            throws IOException {
+        String xml = this.getXmlStr();
+        if (xml != null) {
+            xml = StringEscapeUtils.escapeJavaScript(xml);
+        }
+        return xml;
+    }
+
+
+    public void setTags(String tags) {
+        this.tags = tags;
+    }
+
+    public String getTags() {
+        return tags;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public Calendar getCreationTime() {
+        return creationTime;
+    }
+
+    public void setCreationTime(Calendar creationTime) {
+        this.creationTime = creationTime;
+    }
+
+    public void setCreator(@NotNull User creator) {
+        if (creator == null) {
+            throw new IllegalArgumentException("Owner can not be null");
+        }
+        this.creator = creator;
+    }
+
+    public User getCreator() {
+        return creator;
+    }
+
+    private CollaborationProperties findUserProperty(@NotNull Collaborator collaborator) {
+        final Collaboration collaboration = this.findCollaboration(collaborator);
+        return collaboration != null ? collaboration.getCollaborationProperties() : null;
+    }
+
+    public void setStarred(@NotNull Collaborator collaborator, boolean value) throws WiseMappingException {
+        final CollaborationProperties collaborationProperties = findCollaborationProperties(collaborator);
+        collaborationProperties.setStarred(value);
+    }
+
+    @NotNull
+    public CollaborationProperties findCollaborationProperties(@NotNull Collaborator collaborator) throws WiseMappingException {
+        if (collaborator == null) {
+            throw new IllegalStateException("Collaborator can not be null");
+        }
+
+        final Collaboration collaboration = this.findCollaboration(collaborator);
+        if (collaboration == null) {
+            throw new WiseMappingException("User is not collaborator");
+        }
+        return collaboration.getCollaborationProperties();
+    }
+
+    public boolean isStarred(@NotNull Collaborator collaborator) {
+        final CollaborationProperties collaboratorProperty = this.findUserProperty(collaborator);
+        return collaboratorProperty != null && collaboratorProperty.getStarred();
+    }
+
+    public static String getDefaultMindmapXml(@NotNull final String title) {
+
+        final StringBuilder result = new StringBuilder();
+        result.append("<map version=\"tango\">");
+        result.append("<topic central=\"true\" text=\"");
+        result.append(StringEscapeUtils.escapeXml(title));
+        result.append("\"/></map>");
+        return result.toString();
+    }
+
+    public Mindmap shallowClone() {
+        final Mindmap result = new Mindmap();
+        result.setDescription(this.getDescription());
+        result.setTitle(this.getTitle());
+        result.setXml(this.getXml());
+        result.setTags(this.getTags());
+
+        return result;
+    }
+
+    public boolean hasPermissions(@NotNull Collaborator collaborator, @NotNull CollaborationRole role) {
+        final Collaboration collaboration = this.findCollaboration(collaborator);
+        boolean result = false;
+        if (collaboration != null) {
+            result = collaboration.hasPermissions(role);
+        }
+        return result;
+
+    }
+}