EndeavourOS began as a successor to Antergos, a discontinued distribution also based on Arch Linux.

[citation needed] The idea received support from within the community, and within a day other Antergos moderators joined the project.

While EndeavourOS was originally planned to ship with Cnchi, the net-installer used by Antergos, technical difficulties resulted in the adoption of an offline installer based on Portergos, a Linux distribution also based on Antergos, as a stop-gap until the issues could be resolved later in development.

[9] After the official launch of the distribution, the EndeavourOS team began to develop a Calamares net-installer, which was expected to release in November 2019,[10] but was delayed to December.

[11] The net-installer offers multiple desktop environments, window managers, driver and firmware packages, and kernels during the installation process.