TOOL SIGNAL / DISCONTINUED

Pylot

Corey Goldberg

Load Testing Open Source Self-hosted
Pricing model
Free; GNU GPLv3.
First released
2007
Last verified
Answer

Pylot generated concurrent HTTP requests, validated responses, and produced reports for web capacity and scalability testing. Its original Google Code project is archived, making it a discontinued historical tool. Status: discontinued.

About

Pylot generated concurrent HTTP requests, validated responses, and produced reports for web capacity and scalability testing. Its original Google Code project is archived, making it a discontinued historical tool.

Best for

  • Load Testing scenarios across typical web and service stacks
  • Teams that prefer open-source licensing and self-hosting options
  • Groups comfortable scripting in Python

Not the best fit when

  • New greenfield programs (prefer an active successor or alternative)
  • Teams unwilling to operate generators, results storage, and scaling

Architecture and concurrency

Pylot is commonly operated as self-hosted software with scenario authoring in Python. Concurrency and distribution depend on how you size workers or injectors.

Specs

CATALOG LAST VERIFIED · 2026-08-12 · CURATED BY NAVEENKUMAR NAMACHIVAYAM

Frequently asked

ANSWER-SHAPED
Who is Pylot for?

Pylot is best for engineers designing load, stress, and performance tests for web and service systems. It is open source, so teams can self-host and extend it. Vendor: Corey Goldberg. Deployment model: self-hosted. Free; GNU GPLv3. Confirm details against the official site and a short proof-of-concept in your environment.

How does Pylot differ from Apache JMeter?

Compared with Apache JMeter, scripting centers on Python rather than Java, Groovy. Pylot lists protocols HTTP, HTTPS; Apache JMeter lists HTTP, HTTPS, JDBC, JMS, FTP, TCP. Status is discontinued versus active. Use the Test Rig to compare full specs side by side before a proof-of-concept.

What scripting language and concurrency model does Pylot use?

Pylot uses Python for scripting or scenario definition. Runtime model: GUI-oriented authoring with optional scripting for advanced flows. OS support: Windows, Linux. Protocols: HTTP, HTTPS. Match these to how your team already authors tests and which systems you must drive under load.

What is the cloud or enterprise path for Pylot?

Pylot is primarily self-hosted; teams typically run generators on their own machines, CI runners, or private cloud. Plan for generator capacity, network access to targets, and result storage yourself. As open source, commercial support or hosted siblings may exist separately. Check the official site. Pricing note: Free; GNU GPLv3.

What are known limitations of Pylot?

Pylot appears as discontinued in this directory. Prefer an actively maintained alternative for new work. Historical references remain so older docs and diagrams still resolve. Verify any remaining commercial support directly with the vendor before depending on it. Confirm details against the official site and a short proof-of-concept in your environment.