Open source. Open possibilities.

py-spy is a low-overhead sampling profiler for Python programs that allows visualization of program execution without modifying code or restarting the process.

Memray is a Python memory profiler that tracks allocations in Python, native extensions, and the interpreter. It generates reports like flame graphs, supports threads and native code, and works on Linux/macOS.

Scalene is a high-performance CPU, GPU, and memory profiler for Python that provides line-level analysis and AI-powered optimization suggestions.

pprof is an open-source profiling data visualization and analysis tool that reads profile.proto format data, generates text and graphical reports, and supports interactive analysis through CLI and web interfaces.