The i2c-tools package contains a heterogeneous set of I2C tools for Linux:
a bus probing tool, a chip dumper, register-level SMBus access helpers,
EEPROM decoding scripts, EEPROM programming tools, and a python module for
SMBus access.
All versions of Linux are supported, as long as I2C support is included in
the kernel.

These tools used to be part of the lm-sensors package, but were later split
to a separate package. The rationale for that move is that not all hardware
monitoring chips are I2C devices, and not all I2C devices are hardware
monitoring chips, so having everything in a single package was confusing
and impractical.