Performance & Scalability Testing - Web Services. Pylot is a free open source tool for testing performance and scalability of web services. It runs HTTP load tests, which are useful for capacity planning, benchmarking, analysis, and system tuning.

Pylot generates concurrent load (HTTP Requests), verifies server responses, and produces reports with metrics. Tests suites are executed and monitored from a GUI or shell/console.

Platforms:
Console and Blocking Mode
Console and Blocking modes run on all platforms where Python 2.5+ can be installed. Tested on Windows XP, Vista, Ubuntu 8.04/8.10, Eee PC, Mac OS.

GUI Mode:
Pylot GUI will run on all platforms that support Python and wxWidgets. The GUI has mostly been developed and tested on Windows, but looks decent on Linux and Mac. The application code is pure Python and uses a cross-platform toolkit.

Pylot is a handy tool designed just for testing and fine tuning the performance as well as the scalability of web services.
Pylot Features:
1. HTTP and HTTPS (SSL) support
2. multi-threaded load generator
3. automatic cookie handling
4. response verification with regular expressions
5. execution/monitoring console
6. real-time stats
7. results reports with graphs
8. custom timers
9. GUI mode
10. shell/console modes
11. cross-platform

Requirements:
* Python

The license of this software is Free, you can free download and free use this server utility software.