sigrok-cli is a portable, cross-platform, command-line frontend for sigrok. It supports logic analyzers, oscilloscopes, MSOs, multimeters, sound level meters, various dataloggers and more. It can also decode various protocols, such as SPI, I2C, USB, UART, and many others.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.