diff --git a/src/aggregator/web/app.tsx b/src/aggregator/web/app.tsx
index 415f3b4..ddb6707 100644
--- a/src/aggregator/web/app.tsx
+++ b/src/aggregator/web/app.tsx
@@ -38,7 +38,9 @@ function App() {
 	const [connected, setConnected] = useState(false);
 	const [lastUpdate, setLastUpdate] = useState<Date | null>(null);
 	const [filter, setFilter] = useState<string>("");
-	const [selectedProject, setSelectedProject] = useState<string | null>(null);
+	const [selectedProjects, setSelectedProjects] = useState<Set<string> | null>(null); // null = all
+	const [dropdownOpen, setDropdownOpen] = useState(false);
+	const dropdownRef = useRef<HTMLDivElement>(null);
 	const [actionError, setActionError] = useState<string | null>(null);
 	const [draggedTask, setDraggedTask] = useState<AggregatedTask | null>(null);
 	const [dragOverColumn, setDragOverColumn] = useState<string | null>(null);
@@ -205,13 +207,52 @@ function App() {
 		};
 	}, [connectWebSocket]);
 
+	// Close dropdown on outside click
+	useEffect(() => {
+		const handleClick = (e: MouseEvent) => {
+			if (dropdownRef.current && !dropdownRef.current.contains(e.target as Node)) {
+				setDropdownOpen(false);
+			}
+		};
+		document.addEventListener("click", handleClick);
+		return () => document.removeEventListener("click", handleClick);
+	}, []);
+
+	const isProjectSelected = (name: string) => selectedProjects === null || selectedProjects.has(name);
+
+	const toggleProject = (name: string) => {
+		const activeNames = projects.filter((p) => tasks.some((t) => t.projectName === p.name)).map((p) => p.name);
+		if (selectedProjects === null) {
+			const next = new Set(activeNames);
+			next.delete(name);
+			setSelectedProjects(next);
+		} else if (selectedProjects.has(name)) {
+			const next = new Set(selectedProjects);
+			next.delete(name);
+			setSelectedProjects(next);
+		} else {
+			const next = new Set(selectedProjects);
+			next.add(name);
+			setSelectedProjects(next.size === activeNames.length ? null : next);
+		}
+	};
+
+	const activeProjects = projects.filter((p) => tasks.some((t) => t.projectName === p.name));
+
+	const dropdownLabel = (() => {
+		if (selectedProjects === null) return "All Projects";
+		if (selectedProjects.size === 0) return "No Projects";
+		if (selectedProjects.size === 1) return [...selectedProjects][0];
+		return `${selectedProjects.size} Projects`;
+	})();
+
 	// Group tasks by status
 	const statuses = ["To Do", "In Progress", "Done", "Won't Do"];
 	const tasksByStatus = statuses.reduce(
 		(acc, status) => {
 			acc[status] = tasks.filter((t) => {
 				const statusMatch = t.status.toLowerCase() === status.toLowerCase();
-				const projectMatch = !selectedProject || t.projectName === selectedProject;
+				const projectMatch = selectedProjects === null || selectedProjects.has(t.projectName);
 				const filterMatch =
 					!filter ||
 					t.title.toLowerCase().includes(filter.toLowerCase()) ||
@@ -348,46 +389,150 @@ function App() {
 						minWidth: "200px",
 					}}
 				/>
-				<button
-					onClick={() => setSelectedProject(null)}
-					style={{
-						padding: "0.5rem 1rem",
-						borderRadius: "0.375rem",
-						border: selectedProject === null ? "2px solid #3b82f6" : "1px solid #334155",
-						backgroundColor: selectedProject === null ? "#1e40af" : "#0f172a",
-						color: "#e2e8f0",
-						cursor: "pointer",
-					}}
-				>
-					All Projects
-				</button>
-				{projects.map((project) => (
-					<button
-						key={project.path}
-						onClick={() => setSelectedProject(project.name)}
+				<div ref={dropdownRef} style={{ position: "relative" }}>
+					<div
+						onClick={(e) => {
+							e.stopPropagation();
+							setDropdownOpen(!dropdownOpen);
+						}}
 						style={{
 							padding: "0.5rem 1rem",
 							borderRadius: "0.375rem",
-							border: selectedProject === project.name ? `2px solid ${project.color}` : "1px solid #334155",
-							backgroundColor: selectedProject === project.name ? project.color + "33" : "#0f172a",
+							border: "1px solid #334155",
+							backgroundColor: "#0f172a",
 							color: "#e2e8f0",
 							cursor: "pointer",
 							display: "flex",
 							alignItems: "center",
 							gap: "0.5rem",
+							fontSize: "0.875rem",
+							minWidth: "180px",
+							userSelect: "none",
 						}}
 					>
-						<span
+						<span style={{ display: "flex", gap: "0.25rem", alignItems: "center" }}>
+							{selectedProjects !== null && selectedProjects.size > 0 && selectedProjects.size <= 5
+								? [...selectedProjects].map((name) => {
+										const proj = projects.find((p) => p.name === name);
+										return proj ? (
+											<span
+												key={name}
+												style={{
+													width: selectedProjects.size === 1 ? "0.75rem" : "0.5rem",
+													height: selectedProjects.size === 1 ? "0.75rem" : "0.5rem",
+													borderRadius: "50%",
+													backgroundColor: proj.color,
+													display: "inline-block",
+												}}
+											/>
+										) : null;
+									})
+								: null}
+						</span>
+						<span>{dropdownLabel}</span>
+						<span style={{ marginLeft: "auto", fontSize: "0.625rem", transition: "transform 0.2s", transform: dropdownOpen ? "rotate(180deg)" : "none" }}>
+							▼
+						</span>
+					</div>
+					{dropdownOpen && (
+						<div
 							style={{
-								width: "0.75rem",
-								height: "0.75rem",
-								borderRadius: "50%",
-								backgroundColor: project.color,
+								position: "absolute",
+								top: "calc(100% + 4px)",
+								left: 0,
+								minWidth: "220px",
+								background: "#1e293b",
+								border: "1px solid #334155",
+								borderRadius: "0.5rem",
+								boxShadow: "0 10px 25px rgba(0,0,0,0.4)",
+								zIndex: 100,
+								overflow: "hidden",
 							}}
-						/>
-						{project.name}
-					</button>
-				))}
+						>
+							<div style={{ display: "flex", borderBottom: "1px solid #334155" }}>
+								<button
+									onClick={() => setSelectedProjects(null)}
+									style={{
+										flex: 1,
+										padding: "0.5rem",
+										background: "none",
+										border: "none",
+										borderRight: "1px solid #334155",
+										color: "#94a3b8",
+										fontSize: "0.75rem",
+										cursor: "pointer",
+									}}
+								>
+									All Projects
+								</button>
+								<button
+									onClick={() => setSelectedProjects(new Set())}
+									style={{
+										flex: 1,
+										padding: "0.5rem",
+										background: "none",
+										border: "none",
+										color: "#94a3b8",
+										fontSize: "0.75rem",
+										cursor: "pointer",
+									}}
+								>
+									Clear All
+								</button>
+							</div>
+							{activeProjects.map((project) => {
+								const selected = isProjectSelected(project.name);
+								return (
+									<div
+										key={project.path}
+										onClick={() => toggleProject(project.name)}
+										style={{
+											display: "flex",
+											alignItems: "center",
+											gap: "0.5rem",
+											padding: "0.5rem 0.75rem",
+											cursor: "pointer",
+											fontSize: "0.875rem",
+											background: "transparent",
+										}}
+										onMouseEnter={(e) => (e.currentTarget.style.background = "#334155")}
+										onMouseLeave={(e) => (e.currentTarget.style.background = "transparent")}
+									>
+										<span
+											style={{
+												width: "1rem",
+												height: "1rem",
+												border: selected ? "1.5px solid #3b82f6" : "1.5px solid #475569",
+												borderRadius: "3px",
+												display: "flex",
+												alignItems: "center",
+												justifyContent: "center",
+												background: selected ? "#3b82f6" : "transparent",
+												flexShrink: 0,
+											}}
+										>
+											{selected && (
+												<svg width="10" height="10" viewBox="0 0 10 10" fill="none">
+													<path d="M2 5L4 7L8 3" stroke="white" strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" />
+												</svg>
+											)}
+										</span>
+										<span
+											style={{
+												width: "0.75rem",
+												height: "0.75rem",
+												borderRadius: "50%",
+												backgroundColor: project.color,
+												flexShrink: 0,
+											}}
+										/>
+										{project.name}
+									</div>
+								);
+							})}
+						</div>
+					)}
+				</div>
 			</div>
 
 			{/* View Content */}
@@ -486,7 +631,7 @@ function App() {
 					<DependencyGraph
 						tasks={tasks}
 						projects={projects}
-						selectedProject={selectedProject}
+						selectedProjects={selectedProjects}
 						filter={filter}
 						showCompleted={showCompleted}
 					/>
@@ -842,7 +987,7 @@ function TaskCard({ task, onArchive, onDelete, onUpdate, statuses, onDragStart,
 interface DependencyGraphProps {
 	tasks: AggregatedTask[];
 	projects: Project[];
-	selectedProject: string | null;
+	selectedProjects: Set<string> | null;
 	filter: string;
 	showCompleted: boolean;
 }
@@ -873,7 +1018,7 @@ function isCompleted(status: string): boolean {
 	return lower.includes("done") || lower.includes("complete");
 }
 
-function DependencyGraph({ tasks, projects, selectedProject, filter, showCompleted }: DependencyGraphProps) {
+function DependencyGraph({ tasks, projects, selectedProjects, filter, showCompleted }: DependencyGraphProps) {
 	const svgRef = useRef<SVGSVGElement>(null);
 	const containerRef = useRef<HTMLDivElement>(null);
 	const [dimensions, setDimensions] = useState({ width: 800, height: 600 });
@@ -882,11 +1027,11 @@ function DependencyGraph({ tasks, projects, selectedProject, filter, showComplet
 	const filteredTasks = useMemo(() => {
 		return tasks.filter((t) => {
 			if (!showCompleted && isCompleted(t.status)) return false;
-			if (selectedProject && t.projectName !== selectedProject) return false;
+			if (selectedProjects !== null && !selectedProjects.has(t.projectName)) return false;
 			if (filter && !t.title.toLowerCase().includes(filter.toLowerCase())) return false;
 			return true;
 		});
-	}, [tasks, showCompleted, selectedProject, filter]);
+	}, [tasks, showCompleted, selectedProjects, filter]);
 
 	// Build graph data - note: aggregated tasks don't have dependencies in YAML
 	// So we'll just show all tasks as nodes without edges for now
diff --git a/src/aggregator/web/index.html b/src/aggregator/web/index.html
index b22ed38..e72acc0 100644
--- a/src/aggregator/web/index.html
+++ b/src/aggregator/web/index.html
@@ -48,7 +48,34 @@
       color: #e2e8f0;
       min-width: 200px;
     }
-    .project-btn, .action-btn {
+    .action-btn {
+      padding: 0.5rem 1rem;
+      border-radius: 0.375rem;
+      border: 1px solid #334155;
+      background: #22c55e;
+      border-color: #16a34a;
+      color: #e2e8f0;
+      cursor: pointer;
+      display: flex;
+      align-items: center;
+      gap: 0.5rem;
+      font-size: 0.875rem;
+      font-weight: 500;
+    }
+    .action-btn:hover { background: #16a34a; }
+    .project-dot {
+      width: 0.75rem;
+      height: 0.75rem;
+      border-radius: 50%;
+      display: inline-block;
+      flex-shrink: 0;
+    }
+
+    /* Project Dropdown Filter */
+    .project-dropdown {
+      position: relative;
+    }
+    .project-dropdown-trigger {
       padding: 0.5rem 1rem;
       border-radius: 0.375rem;
       border: 1px solid #334155;
@@ -59,14 +86,97 @@
       align-items: center;
       gap: 0.5rem;
       font-size: 0.875rem;
+      min-width: 180px;
+      user-select: none;
     }
-    .project-btn.active { border-width: 2px; border-color: #3b82f6; background: #1e40af; }
-    .action-btn { background: #22c55e; border-color: #16a34a; font-weight: 500; }
-    .action-btn:hover { background: #16a34a; }
-    .project-dot {
-      width: 0.75rem;
-      height: 0.75rem;
-      border-radius: 50%;
+    .project-dropdown-trigger:hover {
+      border-color: #475569;
+      background: #1e293b;
+    }
+    .project-dropdown-trigger .arrow {
+      margin-left: auto;
+      font-size: 0.625rem;
+      transition: transform 0.2s;
+    }
+    .project-dropdown.open .arrow {
+      transform: rotate(180deg);
+    }
+    .project-dropdown-trigger .selected-dots {
+      display: flex;
+      gap: 0.25rem;
+      align-items: center;
+    }
+    .project-dropdown-menu {
+      display: none;
+      position: absolute;
+      top: calc(100% + 4px);
+      left: 0;
+      min-width: 220px;
+      background: #1e293b;
+      border: 1px solid #334155;
+      border-radius: 0.5rem;
+      box-shadow: 0 10px 25px rgba(0,0,0,0.4);
+      z-index: 100;
+      overflow: hidden;
+    }
+    .project-dropdown.open .project-dropdown-menu {
+      display: block;
+    }
+    .project-dropdown-actions {
+      display: flex;
+      border-bottom: 1px solid #334155;
+    }
+    .project-dropdown-actions button {
+      flex: 1;
+      padding: 0.5rem;
+      background: none;
+      border: none;
+      color: #94a3b8;
+      font-size: 0.75rem;
+      cursor: pointer;
+      transition: background 0.15s, color 0.15s;
+    }
+    .project-dropdown-actions button:hover {
+      background: #334155;
+      color: #e2e8f0;
+    }
+    .project-dropdown-actions button:first-child {
+      border-right: 1px solid #334155;
+    }
+    .project-dropdown-item {
+      display: flex;
+      align-items: center;
+      gap: 0.5rem;
+      padding: 0.5rem 0.75rem;
+      cursor: pointer;
+      transition: background 0.15s;
+      font-size: 0.875rem;
+    }
+    .project-dropdown-item:hover {
+      background: #334155;
+    }
+    .project-dropdown-item .checkbox {
+      width: 1rem;
+      height: 1rem;
+      border: 1.5px solid #475569;
+      border-radius: 3px;
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      flex-shrink: 0;
+      transition: background 0.15s, border-color 0.15s;
+    }
+    .project-dropdown-item.selected .checkbox {
+      background: #3b82f6;
+      border-color: #3b82f6;
+    }
+    .project-dropdown-item.selected .checkbox::after {
+      content: '';
+      width: 0.35rem;
+      height: 0.6rem;
+      border: solid white;
+      border-width: 0 2px 2px 0;
+      transform: rotate(45deg) translateY(-1px);
     }
     .board {
       padding: 2rem;
@@ -516,7 +626,20 @@
 
   <div class="filter-bar" id="filter-bar">
     <input type="text" id="filter" class="filter-input" placeholder="Filter tasks...">
-    <button class="project-btn active" id="all-projects">All Projects</button>
+    <div class="project-dropdown" id="project-dropdown">
+      <div class="project-dropdown-trigger" id="project-dropdown-trigger">
+        <span class="selected-dots" id="selected-dots"></span>
+        <span id="dropdown-label">All Projects</span>
+        <span class="arrow">▼</span>
+      </div>
+      <div class="project-dropdown-menu" id="project-dropdown-menu">
+        <div class="project-dropdown-actions">
+          <button id="select-all-projects">All Projects</button>
+          <button id="clear-all-projects">Clear All</button>
+        </div>
+        <div id="project-dropdown-list"></div>
+      </div>
+    </div>
     <button class="stats-toggle" id="stats-toggle" style="margin-left: auto;">📊 Velocity</button>
     <button class="action-btn" id="new-task-btn">+ New Task</button>
   </div>
@@ -660,7 +783,7 @@
   <script>
     let projects = [];
     let tasks = [];
-    let selectedProject = null;
+    let selectedProjects = null; // null = all projects, Set = specific projects
     let ws = null;
     let draggedTask = null;
     let currentView = 'kanban';
@@ -775,26 +898,107 @@
     }
 
     function renderProjects() {
-      const filterBar = document.getElementById('filter-bar');
-      const oldBtns = filterBar.querySelectorAll('.project-btn:not(#all-projects)');
-      oldBtns.forEach(btn => btn.remove());
+      const list = document.getElementById('project-dropdown-list');
+      list.innerHTML = '';
 
-      const newTaskBtn = document.getElementById('new-task-btn');
-      projects.filter(p => tasks.some(t => t.projectName === p.name)).forEach(p => {
-        const btn = document.createElement('button');
-        btn.className = 'project-btn';
-        btn.innerHTML = `<span class="project-dot" style="background:${p.color}"></span>${p.name}`;
-        btn.onclick = () => {
-          selectedProject = p.name;
-          document.querySelectorAll('.project-btn').forEach(b => b.classList.remove('active'));
-          btn.classList.add('active');
-          renderTasks();
+      const activeProjects = projects.filter(p => tasks.some(t => t.projectName === p.name));
+      activeProjects.forEach(p => {
+        const item = document.createElement('div');
+        item.className = 'project-dropdown-item' + (isProjectSelected(p.name) ? ' selected' : '');
+        item.dataset.project = p.name;
+        item.innerHTML = `<span class="checkbox"></span><span class="project-dot" style="background:${p.color}"></span>${p.name}`;
+        item.onclick = (e) => {
+          e.stopPropagation();
+          toggleProject(p.name);
         };
-        filterBar.insertBefore(btn, newTaskBtn);
+        list.appendChild(item);
       });
 
+      updateDropdownLabel();
+
       document.getElementById('stats').textContent =
-        `${projects.filter(p => tasks.some(t => t.projectName === p.name)).length} active projects | ${tasks.length} tasks | Updated ${new Date().toLocaleTimeString()}`;
+        `${activeProjects.length} active projects | ${tasks.length} tasks | Updated ${new Date().toLocaleTimeString()}`;
+    }
+
+    function isProjectSelected(name) {
+      if (selectedProjects === null) return true;
+      return selectedProjects.has(name);
+    }
+
+    function toggleProject(name) {
+      const activeProjects = projects.filter(p => tasks.some(t => t.projectName === p.name));
+      // If currently "all", switch to all-except-this
+      if (selectedProjects === null) {
+        selectedProjects = new Set(activeProjects.map(p => p.name));
+        selectedProjects.delete(name);
+      } else if (selectedProjects.has(name)) {
+        selectedProjects.delete(name);
+        // If none selected, keep as empty set (shows nothing)
+      } else {
+        selectedProjects.add(name);
+        // If all now selected, switch back to null (all)
+        if (selectedProjects.size === activeProjects.length) {
+          selectedProjects = null;
+        }
+      }
+      renderProjects();
+      renderTasks();
+    }
+
+    function selectAllProjects() {
+      selectedProjects = null;
+      renderProjects();
+      renderTasks();
+    }
+
+    function clearAllProjects() {
+      selectedProjects = new Set();
+      renderProjects();
+      renderTasks();
+    }
+
+    function updateDropdownLabel() {
+      const label = document.getElementById('dropdown-label');
+      const dotsContainer = document.getElementById('selected-dots');
+      dotsContainer.innerHTML = '';
+
+      const activeProjects = projects.filter(p => tasks.some(t => t.projectName === p.name));
+
+      if (selectedProjects === null || selectedProjects.size === activeProjects.length) {
+        label.textContent = 'All Projects';
+      } else if (selectedProjects.size === 0) {
+        label.textContent = 'No Projects';
+      } else if (selectedProjects.size === 1) {
+        const name = [...selectedProjects][0];
+        const proj = projects.find(p => p.name === name);
+        if (proj) {
+          dotsContainer.innerHTML = `<span class="project-dot" style="background:${proj.color}"></span>`;
+        }
+        label.textContent = name;
+      } else {
+        // Show colored dots for selected projects
+        [...selectedProjects].forEach(name => {
+          const proj = projects.find(p => p.name === name);
+          if (proj) {
+            const dot = document.createElement('span');
+            dot.className = 'project-dot';
+            dot.style.background = proj.color;
+            dot.style.width = '0.5rem';
+            dot.style.height = '0.5rem';
+            dotsContainer.appendChild(dot);
+          }
+        });
+        label.textContent = `${selectedProjects.size} Projects`;
+      }
+
+      // Update checkbox states
+      document.querySelectorAll('.project-dropdown-item').forEach(item => {
+        if (isProjectSelected(item.dataset.project)) {
+          item.classList.add('selected');
+        } else {
+          item.classList.remove('selected');
+        }
+      });
     }
 
     async function archiveTask(projectPath, taskId) {
@@ -931,7 +1135,7 @@
       let counts = { todo: 0, progress: 0, done: 0, wontdo: 0 };
 
       tasks.forEach(task => {
-        if (selectedProject && task.projectName !== selectedProject) return;
+        if (selectedProjects !== null && !selectedProjects.has(task.projectName)) return;
         if (filter && !task.title.toLowerCase().includes(filter) &&
             !task.projectName.toLowerCase().includes(filter)) return;
 
@@ -1199,11 +1403,29 @@
     }
 
     document.getElementById('filter').addEventListener('input', renderTasks);
-    document.getElementById('all-projects').onclick = () => {
-      selectedProject = null;
-      document.querySelectorAll('.project-btn').forEach(b => b.classList.remove('active'));
-      document.getElementById('all-projects').classList.add('active');
-      renderTasks();
+
+    // Project dropdown toggle
+    document.getElementById('project-dropdown-trigger').onclick = (e) => {
+      e.stopPropagation();
+      document.getElementById('project-dropdown').classList.toggle('open');
+    };
+    // Close dropdown when clicking outside
+    document.addEventListener('click', (e) => {
+      const dd = document.getElementById('project-dropdown');
+      if (!dd.contains(e.target)) {
+        dd.classList.remove('open');
+      }
+    });
+    // Prevent dropdown menu clicks from closing
+    document.getElementById('project-dropdown-menu').onclick = (e) => {
+      e.stopPropagation();
+    };
+    // All / Clear buttons
+    document.getElementById('select-all-projects').onclick = () => {
+      selectAllProjects();
+    };
+    document.getElementById('clear-all-projects').onclick = () => {
+      clearAllProjects();
     };
 
     // Velocity Statistics Toggle
@@ -1244,8 +1466,8 @@
       let timesToStart = [];
       let weeklyCompletions = [0, 0, 0, 0]; // Last 4 weeks
 
-      const filteredTasks = selectedProject
-        ? tasks.filter(t => t.projectName === selectedProject)
+      const filteredTasks = selectedProjects !== null
+        ? tasks.filter(t => selectedProjects.has(t.projectName))
         : tasks;
 
       filteredTasks.forEach(task => {
@@ -1370,8 +1592,8 @@
       container.innerHTML = '';
 
       // Filter tasks - show ALL tasks, not just those with dependencies
-      let filteredTasks = selectedProject
-        ? tasks.filter(t => t.projectName === selectedProject)
+      let filteredTasks = selectedProjects !== null
+        ? tasks.filter(t => selectedProjects.has(t.projectName))
         : tasks;
 
       if (!showCompleted) {