ANT is a filename extension associated with calcAnt, a software developed by German company Schoettler Software GmbH. The tool is no longer developed and has been replaced by CalcTape multiplatform tool, which doesn’t used ANT anymore.

ANT files were used by calcAnt for storing data generated by the user. The developer no longer offers calcAnt for download on its website. The program was available as a paid license and a free demo was also available.