The name

Tacid, pronounced TASS-id

It is never spelled “Tacit”. The two words look close enough that the wrong one gets typed by accident, so the project says this often and says it plainly.

ProductTacidOSThe distribution, the thing you install.

Short nameTacidThe short project name and the agent's default name.

PronunciationTASS-idStress on the first syllable.

NotTacit · TacID · tacidOSStylisations that collide with unrelated names.

One website

tacidos.com brings together the project, its documentation, and the developer resources. The shorter domaintacid.io redirects here.

The binaries

Every binary is lowercase and named for the process it runs. Role names use a hyphen aftertacid; tacidd follows the Unix convention of addingd for a daemon.

tacidThe command line, and the terminal interface with no arguments.
taciddThe agent daemon.
tacid-keeperPolicy, approvals, secrets, the journal, the health gate.
tacid-stemThe only process that runs as root.
tacid-egressThe only route to the network.
tacid-inferSandboxed local inference.
tacid-sessionThe per-user executor.
tacid-shellThe planned Wayland shell.

Trademark

“Tacid” and “TacidOS” are trademarks of the maintainer. The code is Apache-2.0 and the documentation is CC-BY-4.0, so a fork is welcome — it must simply carry a different name, so that nobody installs something believing it came from here.