Fiddler vs Gatling.io

Fiddler

Description: Fiddler is a free web debugging proxy which logs all HTTP(S) traffic between your computer and the Internet. It allows developers to inspect traffic, set breakpoints, and fiddle with incoming or outgoing data. Fiddler can be used to debug traffic from virtually any application that supports a proxy like web browsers, mobile apps, IoT devices, and more.

Type: software

Gatling.io

Description: Gatling.io is an open-source load and performance testing framework based on Scala, Akka and Netty. It allows users to simulate load on a system and analyze overall performance under various user loads. Gatling is used for testing APIs, microservices and web applications.

Type: software

Pricing: Freemium

Fiddler Features

• HTTP/HTTPS traffic interception and inspection
• Session analysis and manipulation
• Breakpoints and conditional breakpoints
• HTTPS traffic decryption
• Automatic request resending
• Scripting support

Gatling.io Features

• Record and playback - Record user actions and replay them to simulate load
• Advanced simulation engine - Flexible scenario definition using Scala based DSL
• Multiple protocols - Supports HTTP, WebSocket, JMS and more
• Assertions and validations - Validate response content, status codes, timings etc
• Interactive HTML reports - Detailed metrics on response time, throughput, failures etc
• CLI and Maven plugin - Can integrate with CI/CD pipelines
• Cloud scale testing - Integrates with Kubernetes for large scale load tests

Fiddler

• Not listed

Gatling.io

• Freemium