Over time, the system integrated a lot of functionality from another math pack for the HP 48 series, ALG48 by Mika Heiskanen and Claude-Nicolas Fiechter.
Compatible with the HP 48S, 48SX, 48G, 48G+, 48GX, Erable became one of the "must-have" software packages to be installed by advanced users of these calculators.
When Hewlett-Packard developed the HP 49G in 1999, the Erable and ALG48 packages became an integral part of the calculator's firmware, now just named HP49 CAS.
Based on his experiences with Erable, Parisse started developing a new and more general CAS system named Xcas / Giac in 2000.
[1] The last stable stand-alone version of Erable for the HP 48 series is 3.024 (1998-08-06),[4] with source code as of 1998-07-14 available under the GNU GPL.