diff --git a/src/exporters/dot.py b/src/exporters/dot.py
new file mode 100644
index 0000000..b6824fc
--- /dev/null
+++ b/src/exporters/dot.py
@@ -0,0 +1,71 @@
+from pathlib import Path
+
+from src.graph.builder import GraphBuilder
+
+
+class DOTExporter:
+    def __init__(self, graph_builder: GraphBuilder):
+        self.graph_builder = graph_builder
+
+    def export(self, output_path: Path, layout: str = "dot", rankdir: str = "TB") -> None:
+        lines = []
+        lines.append("digraph codegraph {")
+        lines.append(f'  rankdir={rankdir};')
+        lines.append('  node [fontname="Helvetica"];')
+        lines.append('  edge [fontname="Helvetica"];')
+        lines.append("")
+
+        for node in self.graph_builder.get_nodes():
+            lines.append(f'  "{node.node_id}" [')
+            lines.append(f'    label="{node.label}"')
+            lines.append(f'    shape={node.shape}')
+            lines.append(f'    style={node.style}')
+            lines.append(f'    fillcolor="{node.color}"')
+            lines.append('    color="#333333"')
+            lines.append('  ];')
+
+        lines.append("")
+
+        for edge in self.graph_builder.edges:
+            edge_style = "dashed" if edge.edge_type == "calls" else "solid"
+            lines.append(f'  "{edge.source}" -> "{edge.target}" [')
+            lines.append(f'    label="{edge.label}"')
+            lines.append(f'    style={edge_style}')
+            lines.append('    arrowhead=normal')
+            lines.append('  ];')
+
+        lines.append("}")
+
+        content = "\n".join(lines)
+
+        output_path.parent.mkdir(parents=True, exist_ok=True)
+        output_path.write_text(content)
+
+    def get_string(self, layout: str = "dot", rankdir: str = "TB") -> str:
+        lines = []
+        lines.append("digraph codegraph {")
+        lines.append(f'  rankdir={rankdir};')
+        lines.append('  node [fontname="Helvetica"];')
+        lines.append('  edge [fontname="Helvetica"];')
+        lines.append("")
+
+        for node in self.graph_builder.get_nodes():
+            lines.append(f'  "{node.node_id}" [')
+            lines.append(f'    label="{node.label}"')
+            lines.append(f'    shape={node.shape}')
+            lines.append(f'    style={node.style}')
+            lines.append(f'    fillcolor="{node.color}"')
+            lines.append('  ];')
+
+        lines.append("")
+
+        for edge in self.graph_builder.edges:
+            edge_style = "dashed" if edge.edge_type == "calls" else "solid"
+            lines.append(f'  "{edge.source}" -> "{edge.target}" [')
+            lines.append(f'    label="{edge.label}"')
+            lines.append(f'    style={edge_style}')
+            lines.append('  ];')
+
+        lines.append("}")
+
+        return "\n".join(lines)