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Dev tools · June 8, 2025

OBDium

OBDium. The free, open-source on-board diagnostics software. Where silence falls, truth rises. - provrb/obdium

OBDium launched on June 8, 2025 with 8 votes, #3,354 of 7,999 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 1 year on.

What it does

A free and modern vehicle diagnostics tool designed to connect with ELM327 adapters, offering live OBD-II data, fault code analysis, and offline VIN decoding.

A Rust-based vehicle diagnostics tool designed to connect with ELM327 adapters, offering live OBD-II data, fault code analysis, and offline VIN decoding. OBDium is a fast, modern and extensible Rust-based diagnostic tool for interfacing with OBD-II systems via ELM327 serial adapters fully offline. It provides live access to vehicle sensor data, in-depth diagnostics, and accurate VIN decoding without relying on external crates for critical parsing logic. The goal with OBDium is to fill a gap in the ecosystem, providing the best free, open-source, and easy-to-use vehicle diagnostics tool. Demo mode is a unique feature that replays requests and simulates receiving a vehicle's live OBD-II data…from github.com

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