Xcas

Xcas
Xcas
	Xcas 1.5 running on Windows 10
Developer	Bernard Parisse
Release	2000
Stable release	2.0.0-15 (November 2025)
Written in	C++
Operating system	Windows, macOS, Linux, FreeBSD, Android, iOS
Type	Computer algebra system (CAS)
License	GNU GPL
Website	xcas.univ-grenoble-alpes.fr/en.html
Repository	sourceforge.net/p/xcas/code/HEAD/tree/ ;

$Xcas calculating fractions without common denominator$

Figure 1. Xcas is able to calculate fractions that do not have a common denominator.

Figure 2. Xcas is able to solve equations, calculate derivatives, and calculate antiderivatives.

Figure 3. Xcas is able to solve differential equations.

Xcas is a user interface to Giac, which is an open source computer algebra system (CAS) for Windows, macOS and Linux among many other platforms. Giac can be used directly inside software written in C++; Xcas itself is written in C++.

Xcas has compatibility modes with many popular algebra systems like WolframAlpha, Mathematica, Maple, or MuPAD. Users can use Giac/Xcas to develop formal algorithms or use it in other software. Giac is used in SageMath for calculus operations. Among other things, Xcas can solve differential equations (Figure 3) and draw graphs.