diff --git a/net/web/src/App.js b/net/web/src/App.js
index e00267b0..1f381e84 100644
--- a/net/web/src/App.js
+++ b/net/web/src/App.js
@@ -26,36 +26,32 @@ function App() {
     <UploadContextProvider>
       <ChannelContextProvider>
         <CardContextProvider>
-          <GroupContextProvider>
-            <ArticleContextProvider>
-              <ProfileContextProvider>
-                <StoreContextProvider>
-                  <AccountContextProvider>
-                    <ViewportContextProvider>
-                      <AppContextProvider>
-                        <AppWrapper>
-                          <Router>
-                            <Routes>
-                              <Route path="/" element={ <Root /> } />
-                              <Route path="/admin" element={ <Admin /> } />
-                              <Route path="/login" element={ <Access mode="login" /> } />
-                              <Route path="/create" element={ <Access mode="create" /> } />
-                              <Route path="/session" element={
-                                <ConversationContextProvider>
-                                  <Session />
-                                </ConversationContextProvider>
-                              }>
-                              </Route>
-                            </Routes>
-                          </Router>
-                        </AppWrapper>
-                      </AppContextProvider>
-                    </ViewportContextProvider>
-                  </AccountContextProvider>
-                </StoreContextProvider>
-              </ProfileContextProvider>
-            </ArticleContextProvider>
-          </GroupContextProvider>
+          <ProfileContextProvider>
+            <StoreContextProvider>
+              <AccountContextProvider>
+                <ViewportContextProvider>
+                  <AppContextProvider>
+                    <AppWrapper>
+                      <Router>
+                        <Routes>
+                          <Route path="/" element={ <Root /> } />
+                          <Route path="/admin" element={ <Admin /> } />
+                          <Route path="/login" element={ <Access mode="login" /> } />
+                          <Route path="/create" element={ <Access mode="create" /> } />
+                          <Route path="/session" element={
+                            <ConversationContextProvider>
+                              <Session />
+                            </ConversationContextProvider>
+                          }>
+                          </Route>
+                        </Routes>
+                      </Router>
+                    </AppWrapper>
+                  </AppContextProvider>
+                </ViewportContextProvider>
+              </AccountContextProvider>
+            </StoreContextProvider>
+          </ProfileContextProvider>
         </CardContextProvider>
       </ChannelContextProvider>
     </UploadContextProvider>
diff --git a/net/web/src/context/ArticleContext.js b/net/web/src/context/ArticleContext.js
deleted file mode 100644
index 8c9916b3..00000000
--- a/net/web/src/context/ArticleContext.js
+++ /dev/null
@@ -1,14 +0,0 @@
-import { createContext } from 'react';
-import { useArticleContext } from './useArticleContext.hook';
-
-export const ArticleContext = createContext({});
-
-export function ArticleContextProvider({ children }) {
-  const { state, actions } = useArticleContext();
-  return (
-    <ArticleContext.Provider value={{ state, actions }}>
-      {children}
-    </ArticleContext.Provider>
-  );
-}
-
diff --git a/net/web/src/context/GroupContext.js b/net/web/src/context/GroupContext.js
deleted file mode 100644
index 365db76a..00000000
--- a/net/web/src/context/GroupContext.js
+++ /dev/null
@@ -1,14 +0,0 @@
-import { createContext } from 'react';
-import { useGroupContext } from './useGroupContext.hook';
-
-export const GroupContext = createContext({});
-
-export function GroupContextProvider({ children }) {
-  const { state, actions } = useGroupContext();
-  return (
-    <GroupContext.Provider value={{ state, actions }}>
-      {children}
-    </GroupContext.Provider>
-  );
-}
-
diff --git a/net/web/src/context/useAppContext.hook.js b/net/web/src/context/useAppContext.hook.js
index 5d988c4c..df6e8733 100644
--- a/net/web/src/context/useAppContext.hook.js
+++ b/net/web/src/context/useAppContext.hook.js
@@ -7,8 +7,6 @@ import { addAccount } from 'api/addAccount';
 import { getUsername } from 'api/getUsername';
 import { AccountContext } from './AccountContext';
 import { ProfileContext } from './ProfileContext';
-import { ArticleContext } from './ArticleContext';
-import { GroupContext } from './GroupContext';
 import { CardContext } from './CardContext';
 import { ChannelContext } from './ChannelContext';
 import { StoreContext } from './StoreContext';
@@ -36,15 +34,11 @@ export function useAppContext() {
   const profileContext = useContext(ProfileContext);
   const channelContext = useContext(ChannelContext);
   const cardContext = useContext(CardContext);
-  const groupContext = useContext(GroupContext);
-  const articleContext = useContext(ArticleContext);
 
   const resetData = () => {
     revision.current = null;
     accountContext.actions.clearToken();
     profileContext.actions.clearToken();
-    articleContext.actions.clearToken();
-    groupContext.actions.clearToken();
     cardContext.actions.clearToken();
     channelContext.actions.clearToken();
     setState({});
@@ -123,8 +117,6 @@ export function useAppContext() {
     if (appRevision) {
       accountContext.actions.setRevision(appRevision.account);
       profileContext.actions.setRevision(appRevision.profile);
-      articleContext.actions.setRevision(appRevision.article);
-      groupContext.actions.setRevision(appRevision.group);
       cardContext.actions.setRevision(appRevision.card);
       channelContext.actions.setRevision(appRevision.channel);
     }
@@ -135,8 +127,6 @@ export function useAppContext() {
 
     accountContext.actions.setToken(token);
     profileContext.actions.setToken(token);
-    articleContext.actions.setToken(token);
-    groupContext.actions.setToken(token);
     cardContext.actions.setToken(token);
     channelContext.actions.setToken(token);
 
diff --git a/net/web/src/context/useArticleContext.hook.js b/net/web/src/context/useArticleContext.hook.js
deleted file mode 100644
index 86801f3d..00000000
--- a/net/web/src/context/useArticleContext.hook.js
+++ /dev/null
@@ -1,31 +0,0 @@
-import { useEffect, useState } from 'react';
-
-export function useArticleContext() {
-  const [state, setState] = useState({
-    token: null,
-    revision: 0,
-  });
-
-  useEffect(() => {
-  }, []);
-
-  const updateState = (value) => {
-    setState((s) => ({ ...s, ...value }))
-  }
-
-  const actions = {
-    setToken: (token) => {
-      updateState({ token });
-    },
-    clearToken: () => {
-      setState({ init: false });
-    },
-    setRevision: async (revision) => {
-      updateState({ revision });
-    },
-  }
-
-  return { state, actions }
-}
-
-
diff --git a/net/web/src/context/useGroupContext.hook.js b/net/web/src/context/useGroupContext.hook.js
deleted file mode 100644
index 1a9d9b09..00000000
--- a/net/web/src/context/useGroupContext.hook.js
+++ /dev/null
@@ -1,63 +0,0 @@
-import { useState, useRef } from 'react';
-import { getGroups } from 'api/getGroups';
-
-export function useGroupContext() {
-  const [state, setState] = useState({
-    init: false,
-    groups: new Map(),
-  });
-  const access = useRef(null);
-  const revision = useRef(null);
-  const groups = useRef(new Map());
-  const next = useRef(null);
-
-  const updateState = (value) => {
-    setState((s) => ({ ...s, ...value }))
-  }
-
-  const updateGroups = async () => {
-    let delta = await getGroups(access.current, revision.current);
-    for (let group of delta) {
-      if (group.data) {
-        groups.current.set(group.id, group);
-      }
-      else {
-        groups.current.delete(group.id);
-      }
-    }
-  }
-
-  const setGroups = async (rev) => {
-    if (next.current == null) {
-      if (revision.current !== rev) {
-        await updateGroups();
-        updateState({ init: true, groups: groups.current });
-        revision.current = rev;
-      }
-      if (next.current != null) {
-        let r = next.current;
-        next.current = null;
-        setGroups(r);
-      }
-    }
-    else {
-      next.current = rev;
-    }
-  }
-
-  const actions = {
-    setToken: (token) => {
-      access.current = token;
-    },
-    clearToken: () => {
-      access.current = null;
-      setState({ init: false });
-    },
-    setRevision: async (rev) => {
-      setGroups(rev);
-    },
-  }
-
-  return { state, actions }
-}
-