Hiperthermia

Hiperthermia is a utility for driving thermal printers, the receipt- and label-style printers that mark heat-sensitive paper instead of using ink or toner. It is aimed at people who want to send their own content to such a device rather than rely on the vendor's bundled software, covering tasks like printing text, images, or generated output on a roll of thermal paper.

The program is published by Sergiotarxz under the AGPL-3.0-only license, which means the source can be studied and modified, and that the copyleft terms extend to network use. Being AGPL, any derivative offered as a service is expected to make its source available in turn.

Distribution is limited to Linux, so users on other desktop operating systems would need a Linux environment to run it. As with any printer tooling, the practical outcome depends on whether your particular thermal printer model speaks a protocol the program can address, so checking device compatibility before committing to it is reasonable.