The latest articles on DEV Community by Enes Genç (@enesfurkangenc). https://dev.to/enesfurkangenc https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F105813%2F2dfcc2a5-5d45-49f7-b113-5991efbf7d67.JPG https://dev.to/enesfurkangenc en Enes Genç Wed, 03 Dec 2025 18:36:48 +0000 https://dev.to/enesfurkangenc/why-i-built-endpoint-a-postman-alternative-that-actually-understands-developers-57m1 https://dev.to/enesfurkangenc/why-i-built-endpoint-a-postman-alternative-that-actually-understands-developers-57m1 <h1> Why I Built Endpoint: A Postman Alternative That Actually Understands Developers </h1> <p>As a developer, I've spent countless hours testing APIs. Postman is popular, but it often falls short for real-world development workflows. Missing WebSocket support, slow performance, and a clunky interface led me to build something better.</p> <h2> Enter Endpoint: Built for Developers, by Developers </h2> <p><strong>Endpoint</strong> is a native macOS API testing tool designed with developer experience in mind. It's not just another Postman clone—it's a tool that addresses the gaps developers face daily.</p> <h2> What Makes Endpoint Different? </h2> <h3> 1. <strong>Native WebSocket Support (Out of the Box)</strong> </h3> <p>Most API testing tools treat WebSockets as an afterthought. Endpoint includes WebSocket support:</p> <ul> <li>Real-time connection management</li> <li>Message history with timestamps</li> <li>JSON formatting for WebSocket messages</li> <li>Connection state visualization</li> <li>Send/receive message tracking</li> </ul> <p><strong>Why this matters:</strong> Modern apps rely on WebSockets. Testing them shouldn't require separate tools or workarounds.</p> <h3> 2. <strong>Built-in Performance Testing</strong> </h3> <p>Endpoint includes performance testing:</p> <ul> <li> <strong>Load Testing</strong>: Test concurrent requests, measure response times, and identify bottlenecks</li> <li> <strong>Response Time Analysis</strong>: Detailed timing breakdown (DNS, TCP, TLS, TTFB)</li> <li> <strong>Concurrent Request Testing</strong>: Simulate real-world traffic patterns</li> <li> <strong>Performance Metrics</strong>: Visual charts and statistics</li> </ul> <p><strong>Real-world use case:</strong> Before deploying an API endpoint, run a load test to ensure it handles production traffic. Endpoint makes this straightforward.</p> <h3> 3. <strong>Developer-First UX</strong> </h3> <p><strong>Drag &amp; Drop Interface</strong></p> <ul> <li>Reorder requests and collections with drag &amp; drop</li> <li>Move requests between collections seamlessly</li> <li>Visual feedback during drag operations</li> </ul> <p><strong>Command Palette (Cmd+P)</strong></p> <ul> <li>Quick navigation between requests and collections</li> <li>Keyboard-first workflow</li> <li>Opens requests in new tabs automatically</li> </ul> <p><strong>Environment Variables with Autocomplete</strong></p> <ul> <li>Type <code>{{</code> in request bodies to get variable suggestions</li> <li>Autocomplete for environment variables</li> <li>No more typos in variable names</li> </ul> <h3> 4. <strong>Native macOS Performance</strong> </h3> <p>Built with SwiftUI for macOS:</p> <ul> <li>Faster than Electron-based alternatives</li> <li>Native macOS integrations</li> <li>Lower memory usage</li> <li>Smooth animations and interactions</li> </ul> <h2> Feature Comparison: Endpoint vs. Postman </h2> <p><strong>WebSocket Support</strong></p> <ul> <li>✅ <strong>Endpoint</strong>: Native, full support with real-time message tracking</li> <li>❌ <strong>Postman</strong>: Limited support, requires workarounds</li> </ul> <p><strong>Performance Testing</strong></p> <ul> <li>⚠️ Requires Newman CLI or external tools</li> </ul> <p><strong>Native macOS Experience</strong></p> <ul> <li>✅ <strong>Endpoint</strong>: Built with SwiftUI, native performance</li> <li>❌ <strong>Postman</strong>: Electron-based, slower and heavier</li> </ul> <p><strong>Drag &amp; Drop Interface</strong></p> <ul> <li>✅ <strong>Endpoint</strong>: Full drag &amp; drop for requests and collections</li> <li>⚠️ <strong>Postman</strong>: Limited drag &amp; drop functionality</li> </ul> <p><strong>Command Palette</strong></p> <ul> <li>✅ <strong>Endpoint</strong>: Cmd+P for quick navigation</li> <li>❌ <strong>Postman</strong>: No command palette</li> </ul> <p><strong>Environment Variable Autocomplete</strong></p> <ul> <li>✅ <strong>Endpoint</strong>: Autocomplete suggestions when typing <code>{{</code> </li> <li>❌ <strong>Postman</strong>: Manual typing only</li> </ul> <p><strong>Free Tier</strong></p> <ul> <li>✅ <strong>Endpoint</strong>: Generous free tier with core features</li> <li>⚠️ <strong>Postman</strong>: More limited free tier</li> </ul> <p><strong>Memory Usage</strong></p> <ul> <li>✅ <strong>Endpoint</strong>: Lightweight, optimized for macOS</li> <li>❌ <strong>Postman</strong>: Higher memory usage (Electron)</li> </ul> <h2> Real-World Use Cases </h2> <h3> 1. <strong>Real-Time Application Development</strong> </h3> <p>When building a chat application or live dashboard, WebSocket testing is essential. Endpoint lets you:</p> <ul> <li>Connect to WebSocket endpoints</li> <li>Send and receive messages in real-time</li> <li>Monitor connection state</li> <li>Debug message formats</li> </ul> <h3> 2. <strong>API Performance Optimization</strong> </h3> <p>Before deploying a new endpoint:</p> <ul> <li>Run load tests with 1000+ concurrent requests</li> <li>Analyze response time distributions</li> <li>Identify slow endpoints</li> <li>Optimize based on data</li> </ul> <h3> 3. <strong>Team Collaboration</strong> </h3> <ul> <li>Organize requests into collections</li> <li>Share collections via export/import</li> <li>Use environment variables for different stages</li> <li>Maintain consistent testing workflows</li> </ul> <h2> The Technical Stack </h2> <p>Endpoint is built with:</p> <ul> <li> <strong>SwiftUI</strong> for native macOS UI</li> <li> <strong>Combine</strong> for reactive programming</li> <li> <strong>URLSession</strong> for HTTP/WebSocket connections</li> <li> <strong>Swift</strong> for performance</li> </ul> <p>This stack ensures:</p> <ul> <li>Fast startup times</li> <li>Low memory footprint</li> <li>Smooth user experience</li> <li>Native macOS feel</li> </ul> <h2> What's Free vs. Premium? </h2> <p><strong>Free Forever:</strong></p> <ul> <li>All HTTP methods (GET, POST, PUT, DELETE, PATCH)</li> <li>WebSocket support</li> <li>Environment Variables</li> <li>Drag &amp; Drop</li> <li>Command Palette</li> <li>Basic themes</li> </ul> <p><strong>Premium Features:</strong></p> <ul> <li>Export collections (JSON, Postman, Swagger)</li> <li>Import collections (Swagger link)</li> <li>Performance Testing</li> <li>Premium themes</li> <li>Priority support</li> </ul> <p>The core functionality is free. Premium features are for power users who need advanced export/import capabilities.</p> <h2> Getting Started </h2> <ol> <li> <strong>Download</strong> Endpoint from the Mac App Store</li> <li> <strong>Create</strong> your first collection</li> <li> <strong>Add</strong> requests and start testing</li> <li> <strong>Try</strong> WebSocket connections</li> <li> <strong>Run</strong> performance tests</li> </ol> <h2> Why I Built This </h2> <p>As a developer, I wanted a tool that:</p> <ul> <li>Works the way I work</li> <li>Doesn't get in my way</li> <li>Includes features I actually need</li> <li>Performs well on macOS</li> </ul> <p>Endpoint is the result of that vision.</p> <h2> The Future of API Testing </h2> <p>The API landscape is evolving:</p> <ul> <li>More real-time applications</li> <li>Higher performance requirements</li> <li>Better developer tools</li> </ul> <p>Endpoint is designed to grow with these needs. We're constantly adding features based on developer feedback.</p> <h2> Try Endpoint Today </h2> <p>If you're tired of:</p> <ul> <li>Slow, bloated API testing tools</li> <li>Missing WebSocket support</li> <li>Clunky interfaces</li> <li>Performance limitations</li> </ul> <p><strong>Endpoint might be for you.</strong></p> <p><a href="https://apps.apple.com/tr/app/endpoint-http-client/id6755891816?mt=12" rel="noopener noreferrer">Download Endpoint</a> and see the difference a native macOS tool can make.</p> <p><strong>What features would you like to see in an API testing tool? Share your thoughts in the comments below!</strong></p> <h2> Discussion </h2> <p>What's your experience with API testing tools? Have you tried Endpoint? Let me know in the comments!</p> api webdev postman websocket