diff --git a/src/types.ts b/src/types.ts
index 0f7b4c9..5ec51bb 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -183,7 +183,12 @@ export type SubmitCf = {
 export type SubmitCSES = {
     command: 'submitCSES';
 } & WebviewMessageCommon;
-
+export type SubmitCodeChef = {
+    command: 'submitCodeChef';
+} & WebviewMessageCommon;
+export type SubmitAtcoder = {
+    command: 'submitAtcoder';
+} & WebviewMessageCommon;
 export type SubmitKattis = {
     command: 'submitKattis';
 } & WebviewMessageCommon;
@@ -229,6 +234,8 @@ export type WebviewToVSEvent =
     | DeleteTcsCommand
     | SubmitCf
     | SubmitCSES
+    | SubmitCodeChef
+    | SubmitAtcoder
     | OnlineJudgeEnv
     | SubmitKattis
     | OpenUrl
diff --git a/src/webview/JudgeView.ts b/src/webview/JudgeView.ts
index 8fecde8..d5af717 100644
--- a/src/webview/JudgeView.ts
+++ b/src/webview/JudgeView.ts
@@ -95,6 +95,14 @@ class JudgeViewProvider implements vscode.WebviewViewProvider {
                         storeSubmitProblem(message.problem);
                         break;
                     }
+                    case 'submitCodeChef': {
+                        storeSubmitProblem(message.problem);
+                        break;
+                    }
+                    case 'submitAtcoder': {
+                        storeSubmitProblem(message.problem);
+                        break;
+                    }
                     case 'submitKattis': {
                         submitKattisProblem(message.problem);
                         break;
diff --git a/src/webview/frontend/App.tsx b/src/webview/frontend/App.tsx
index f0a199a..fb79acd 100644
--- a/src/webview/frontend/App.tsx
+++ b/src/webview/frontend/App.tsx
@@ -422,6 +422,22 @@ function Judge(props: {
 
         setWaitingForSubmit(true);
     };
+    const submitCodeChef = () => {
+        sendMessageToVSCode({
+            command: 'submitCodeChef',
+            problem,
+        });
+
+        setWaitingForSubmit(true);
+    };
+    const submitAtcoder = () => {
+        sendMessageToVSCode({
+            command: 'submitAtcoder',
+            problem,
+        });
+
+        setWaitingForSubmit(true);
+    };
     const debounceFocusLast = () => {
         setTimeout(() => {
             setFocusLast(false);
@@ -572,7 +588,9 @@ function Judge(props: {
         if (
             !url.hostname.endsWith('codeforces.com') &&
             url.hostname !== 'open.kattis.com' &&
-            !url.hostname.endsWith('cses.fi')
+            !url.hostname.endsWith('cses.fi') &&
+            !url.hostname.endsWith('codechef.com') &&
+            !url.hostname.endsWith('atcoder.jp')
         ) {
             return null;
         }
@@ -622,6 +640,24 @@ function Judge(props: {
                     {t('submit')}
                 </button>
             );
+        } else if (url.hostname.endsWith('codechef.com')) {
+            return (
+                <button className="btn btn-block" onClick={submitCodeChef}>
+                    <span className="icon">
+                        <i className="codicon codicon-cloud-upload"></i>
+                    </span>{' '}
+                    {t('submit')}
+                </button>
+            );
+        } else if (url.hostname.endsWith('atcoder.jp')) {
+            return (
+                <button className="btn btn-block" onClick={submitAtcoder}>
+                    <span className="icon">
+                        <i className="codicon codicon-cloud-upload"></i>
+                    </span>{' '}
+                    {t('submit')}
+                </button>
+            );
         }
     };