Modern, Python-centric tools for functional verification engineers and developers

FVUtils is a collection of open-source tools designed to address today's verification challenges. From constrained-random stimulus generation to coverage analysis, transaction tracing to HDL integration, FVUtils provides production-ready solutions for modern verification workflows.

Python Verification Stimulus and Coverage - Bring SystemVerilog-style constrained-random and functional coverage to Python
📚 Documentation | 📦 PyPI

Seamless Python-SystemVerilog integration - Run async pytest tests from SV, call SV functions from Python
📚 Documentation

Python API for Unified Coverage Interoperability Standard (UCIS) data
📚 Documentation | 📦 PyPI

LLM-powered waveform analysis via Model Context Protocol - Query VCD/FST/GHW files with natural language
📚 Documentation

Write transaction-level data from SystemVerilog/Python to beautiful Perfetto traces
🔍 GitHub

Git and Python-centric package manager for managing project dependencies
📚 Documentation

• FLTools - EDA filelist parsing and manipulation
• SVDep - SystemVerilog dependency tracking for incremental builds
• MKDV - Makefiles for cocotb/pybfm testbenches across multiple simulators
• vlsim - Python wrapper and run infrastructure for Verilator
• pytest-fv - Capture HDL test suites via Python unit tests
• SVT - Simple SystemVerilog testbench library
• sv-ffi - Medium-level interface between C and SV-DPI

• QEMU Model Loader - Technical research on loading QEMU device models as shared libraries
• VIA - Verification environment introspection API

Questions? Open an issue in the relevant project repository or start a discussion!