diff --git a/app/src/analyzers/dependencyAnalyzer.ts b/app/src/analyzers/dependencyAnalyzer.ts
new file mode 100644
index 0000000..e7d0ee4
--- /dev/null
+++ b/app/src/analyzers/dependencyAnalyzer.ts
@@ -0,0 +1,263 @@
+import * as path from 'path';
+import * as fs from 'fs';
+import { DependencyAnalysis, DependencyInfo, ProjectType } from '../types';
+import { parseJSONFile, parseTOMLFile } from '../utils/fileUtils';
+
+const NODE_PACKAGE_MANAGERS = ['yarn.lock', 'pnpm-lock.yaml', 'bun.lockb'];
+const PYTHON_PACKAGE_MANAGERS = ['Pipfile.lock', 'poetry.lock'];
+
+export async function analyzeDependencies(
+  directory: string,
+  projectType: ProjectType
+): Promise<DependencyAnalysis> {
+  let dependencies: DependencyInfo[] = [];
+  let packageManager: DependencyAnalysis['packageManager'] = null;
+  let lockFile: string | undefined;
+
+  switch (projectType) {
+    case 'node':
+      const nodeDeps = await analyzeNodeDependencies(directory);
+      dependencies = nodeDeps.dependencies;
+      packageManager = nodeDeps.packageManager;
+      lockFile = nodeDeps.lockFile;
+      break;
+    case 'python':
+      const pyDeps = await analyzePythonDependencies(directory);
+      dependencies = pyDeps.dependencies;
+      packageManager = pyDeps.packageManager;
+      lockFile = pyDeps.lockFile;
+      break;
+    case 'go':
+      const goDeps = await analyzeGoDependencies(directory);
+      dependencies = goDeps.dependencies;
+      packageManager = goDeps.packageManager;
+      break;
+    case 'rust':
+      const rustDeps = await analyzeRustDependencies(directory);
+      dependencies = rustDeps.dependencies;
+      packageManager = rustDeps.packageManager;
+      break;
+    case 'java':
+      const javaDeps = await analyzeJavaDependencies(directory);
+      dependencies = javaDeps.dependencies;
+      packageManager = javaDeps.packageManager;
+      break;
+    default:
+      dependencies = [];
+  }
+
+  return {
+    dependencies,
+    packageManager,
+    lockFile
+  };
+}
+
+async function analyzeNodeDependencies(
+  directory: string
+): Promise<{ dependencies: DependencyInfo[]; packageManager: DependencyAnalysis['packageManager']; lockFile?: string }> {
+  const packageJsonPath = path.join(directory, 'package.json');
+  const packageJson = parseJSONFile<{
+    dependencies?: Record<string, string>;
+    devDependencies?: Record<string, string>;
+  }>(packageJsonPath);
+
+  if (!packageJson) {
+    return { dependencies: [], packageManager: null };
+  }
+
+  const dependencies: DependencyInfo[] = [];
+
+  if (packageJson.dependencies) {
+    for (const [name, version] of Object.entries(packageJson.dependencies)) {
+      dependencies.push({ name, version: String(version), type: 'prod' });
+    }
+  }
+
+  if (packageJson.devDependencies) {
+    for (const [name, version] of Object.entries(packageJson.devDependencies)) {
+      dependencies.push({ name, version: String(version), type: 'dev' });
+    }
+  }
+
+  let packageManager: DependencyAnalysis['packageManager'] = 'npm';
+  let lockFile: string | undefined;
+
+  for (const lockFileName of NODE_PACKAGE_MANAGERS) {
+    if (fs.existsSync(path.join(directory, lockFileName))) {
+      lockFile = lockFileName;
+      if (lockFileName === 'yarn.lock') packageManager = 'yarn';
+      else if (lockFileName === 'pnpm-lock.yaml') packageManager = 'pnpm';
+      else if (lockFileName === 'bun.lockb') packageManager = 'npm';
+      break;
+    }
+  }
+
+  return { dependencies, packageManager, lockFile };
+}
+
+async function analyzePythonDependencies(
+  directory: string
+): Promise<{ dependencies: DependencyInfo[]; packageManager: DependencyAnalysis['packageManager']; lockFile?: string }> {
+  const dependencies: DependencyInfo[] = [];
+
+  const requirementsPath = path.join(directory, 'requirements.txt');
+  if (fs.existsSync(requirementsPath)) {
+    const content = fs.readFileSync(requirementsPath, 'utf-8');
+    const lines = content.split('\n');
+    
+    for (const line of lines) {
+      const trimmed = line.trim();
+      if (trimmed && !trimmed.startsWith('#')) {
+        const match = trimmed.match(/^([a-zA-Z0-9_-]+)([<>=!~]+[^;]+)?/);
+        if (match) {
+          dependencies.push({
+            name: match[1],
+            version: match[2] || 'latest',
+            type: 'prod'
+          });
+        }
+      }
+    }
+  }
+
+  const pyprojectPath = path.join(directory, 'pyproject.toml');
+  const pyproject = parseTOMLFile(pyprojectPath);
+  
+  const projectDeps = pyproject?.['project'] as Record<string, unknown> | undefined;
+  if (projectDeps && Array.isArray(projectDeps['dependencies'])) {
+    const deps = projectDeps['dependencies'] as string[];
+    for (const dep of deps) {
+      const match = dep.match(/^([a-zA-Z0-9_-]+)([<>=!~]+[^;]+)?/);
+      if (match) {
+        dependencies.push({
+          name: match[1],
+          version: match[2] || 'latest',
+          type: 'prod'
+        });
+      }
+    }
+  }
+
+  let packageManager: DependencyAnalysis['packageManager'] = 'pip';
+  let lockFile: string | undefined;
+
+  for (const lockFileName of PYTHON_PACKAGE_MANAGERS) {
+    if (fs.existsSync(path.join(directory, lockFileName))) {
+      lockFile = lockFileName;
+      if (lockFileName === 'poetry.lock') packageManager = 'poetry';
+      break;
+    }
+  }
+
+  return { dependencies, packageManager, lockFile };
+}
+
+async function analyzeGoDependencies(
+  directory: string
+): Promise<{ dependencies: DependencyInfo[]; packageManager: DependencyAnalysis['packageManager'] }> {
+  const goModPath = path.join(directory, 'go.mod');
+
+  if (!fs.existsSync(goModPath)) {
+    return { dependencies: [], packageManager: 'go' };
+  }
+
+  const content = fs.readFileSync(goModPath, 'utf-8');
+  const dependencies: DependencyInfo[] = [];
+
+  const requireBlockMatch = content.match(/require\s*\(\s*([\s\S]*?)\s*\)/);
+  if (requireBlockMatch) {
+    const requireBlock = requireBlockMatch[1];
+    const depRegex = /\b([^\s]+)\s+v?([^\s]+)/g;
+    let match;
+    while ((match = depRegex.exec(requireBlock)) !== null) {
+      const path = match[1];
+      if (path && !path.startsWith('//') && path !== 'require') {
+        dependencies.push({
+          name: path,
+          version: match[2] || 'latest',
+          type: 'prod'
+        });
+      }
+    }
+  }
+
+  return { dependencies, packageManager: 'go' };
+}
+
+async function analyzeRustDependencies(
+  directory: string
+): Promise<{ dependencies: DependencyInfo[]; packageManager: DependencyAnalysis['packageManager'] }> {
+  const cargoTomlPath = path.join(directory, 'Cargo.toml');
+  const cargoToml = parseTOMLFile(cargoTomlPath);
+
+  if (!cargoToml) {
+    return { dependencies: [], packageManager: 'cargo' };
+  }
+
+  const dependencies: DependencyInfo[] = [];
+
+  const deps = cargoToml.dependencies as Record<string, string | { version?: string }> | undefined;
+  if (deps) {
+    for (const [name, config] of Object.entries(deps)) {
+      const version = typeof config === 'string' ? config : (config as { version?: string }).version || '*';
+      dependencies.push({ name, version, type: 'prod' });
+    }
+  }
+
+  const dev = cargoToml.dev as { dependencies?: Record<string, string | { version?: string }> } | undefined;
+  if (dev?.dependencies) {
+    for (const [name, config] of Object.entries(dev.dependencies)) {
+      const version = typeof config === 'string' ? config : (config as { version?: string }).version || '*';
+      dependencies.push({ name, version, type: 'dev' });
+    }
+  }
+
+  return { dependencies, packageManager: 'cargo' };
+}
+
+async function analyzeJavaDependencies(
+  directory: string
+): Promise<{ dependencies: DependencyInfo[]; packageManager: DependencyAnalysis['packageManager'] }> {
+  const dependencies: DependencyInfo[] = [];
+
+  const pomPath = path.join(directory, 'pom.xml');
+  if (fs.existsSync(pomPath)) {
+    const content = fs.readFileSync(pomPath, 'utf-8');
+    
+    const dependencyRegex = /<dependency>\s*<groupId>([^<]+)<\/groupId>\s*<artifactId>([^<]+)<\/artifactId>\s*<version>([^<]+)<\/version>\s*<\/dependency>/g;
+    let match;
+    
+    while ((match = dependencyRegex.exec(content)) !== null) {
+      dependencies.push({
+        name: `${match[1]}:${match[2]}`,
+        version: match[3],
+        type: 'prod'
+      });
+    }
+
+    return { dependencies, packageManager: 'maven' };
+  }
+
+  const buildGradlePath = path.join(directory, 'build.gradle');
+  const buildGradleKtsPath = path.join(directory, 'build.gradle.kts');
+  
+  if (fs.existsSync(buildGradlePath) || fs.existsSync(buildGradleKtsPath)) {
+    const content = fs.readFileSync(buildGradlePath || buildGradleKtsPath, 'utf-8');
+    
+    const dependencyRegex = /implementation\s+['"]([^:'"]+):([^:'"']+):([^'"@]+)@?(jar)?['"]/g;
+    let match;
+    
+    while ((match = dependencyRegex.exec(content)) !== null) {
+      dependencies.push({
+        name: `${match[1]}:${match[2]}`,
+        version: match[3],
+        type: 'prod'
+      });
+    }
+
+    return { dependencies, packageManager: 'gradle' };
+  }
+
+  return { dependencies, packageManager: null };
+}