It has been called LibreOffice [1] since the fork from OpenOffice [2] which in turn was developed from StarOffice [3]. The fork and name change from OpenOffice to LibreOffice was due to the former coming under the control of Oracle, a company known for its militancy with regard to licence enforcement. The experience with the way Oracle stewards the Java brand and technology shows they do know how to handle free software so it may have been unnecessary to fork the project but that aside, two name changes since the inception of StarOffice in 1985, one of which on the boundary of the closed-source office suite going open source, the other on a takeover by a known licence warrior is not bad and not too hard to follow.
LibreOffice, remember?
[1] https://en.wikipedia.org/wiki/LibreOffice
[2] https://en.wikipedia.org/wiki/OpenOffice.org
[3] https://en.wikipedia.org/wiki/StarOffice