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A proxy-based API simulator that records traffic for repeatable tests without calling the real service each time.

Use desktop chart studies with explicit exchange-data options

Retail and custom type, with multilingual engineering and free Overpass fonts.

Build event-driven market simulations with a shared strategy engine

GPU fire and smoke simulation with sprite-sheet and volume exports

Write load-test scenarios as code and control the request rate sent to an application.

Liquid simulation with detailed meshing controls and animated geometry exports

Node-based 3D creation and simulation

Model-based end-to-end test automation for enterprise applications and business workflows.

Learn chart and order workflows with a separate paper-trading mode

Pattern-based 3D garments and cloth simulation

Environments for training AI and agents that handle recurring engineering work

Solana protocol explorer with a free transaction-message simulator

Experience management platform that turns human understanding into decisions.

Engineering formulas, reference data and calculation tools

Engineering calculations across circuits and mechanics

Measurement conversion across everyday and engineering units

Engineering leadership through recurring essays

Technical data and calculations for engineering study

Geometry and mathematical exploration with constructed figures

Civil engineering exam preparation with review courses, practice exams, videos and study resources.

Data infrastructure and engineering reading

Reading about analytics engineering and adjacent data work

Engineering calculations with steps and interactive models