Xcas

Xcas is a computer algebra workspace that brings symbolic mathematics together with graphing, geometry, spreadsheets, statistics, and programming. It suits students and technically minded users who want one flexible environment for varied mathematical work. Its breadth and free license are compelling; the main trade-offs are a less complete, slower browser version and a learning curve shaped by its many modes.

Overview

Founded in 2000, Xcas provides an interface to the Giac computer algebra system. It ranges from equation solving and calculus to dynamic geometry and programmable calculations, so it can serve as a broader workspace than a conventional graphing calculator. Compatibility modes for Maple, MuPAD, and TI calculator CAS software may ease the move for users familiar with those systems.

That scope is useful for coursework and mathematical exploration, but it also means more to learn than a single-purpose solver. The English documentation is described by its makers as incomplete, though tutorials, reference guides, and a forum provide ways to get started and find help.

Key features

Symbolic mathematics

Xcas supports arbitrary-precision arithmetic, polynomial operations, simplification, equation solving, calculus, and linear algebra. That range suits users who need to manipulate expressions and explore mathematical problems in one environment, rather than only receive a numerical answer.

Geometry, graphs, and data

Programmable dynamic 2-D geometry, 3-D geometry, and graphs make Xcas useful for exploring functions and geometric constructions. Its spreadsheet adds relative and absolute references and can hold formal mathematical objects in cells; built-in 1-D and 2-D statistics include regressions. These tools extend the system beyond symbolic calculations, although some Windows setups may have 3-D display problems.

Programming and integration

Users can write functions with variables, tests, and loops, then work in a program editor with an interactive debugger. Syntax modes include C-like, Maple, MuPAD, and TI89. Developers can also use the Giac calculation library from C++, Python, Java, and JavaScript, while the site describes interfaces with LaTeX and TeXmacs.

Pricing

Xcas costs nothing. The free plan includes the computer algebra system under the GPL3 license, making it suitable for students, educators, and individuals who want the full mathematical workspace without a subscription. Commercial software that includes Xcas requires contacting the makers about a dual license, so the free plan is not a blanket permission to embed it in a commercial product.

Platforms

Xcas is available on Android, iOS, Linux, macOS, the web, and Windows. The browser version can run locally without installation or an internet connection, which is useful on restricted or offline machines, but it is slower and less complete than compiled desktop versions. The makers describe opening it in Firefox or Chrome on Android and in a browser on iOS; their iOS instructions have not been tested by the author.

The Mac OS 14 package is unsigned, and the maker's installation instructions explain how to allow it. On Windows, 3-D display issues can occur on some setups; under some Ubuntu Unity versions, the makers report crashes or keystrokes that are not recognized.

Who it's for

Xcas is a strong fit for students, educators, and mathematically curious users who want symbolic computation alongside geometry, statistics, spreadsheets, and code. Its possible role as a high-end graphing-calculator replacement and its use in educational materials and high-school testing align with that audience. Developers may also value access to Giac from several programming languages.

It is less suited to someone who wants only a quick, guided answer to a routine problem, or who depends on a polished browser experience across every device. Users who need complete English documentation or reliable 3-D display on a particular Windows setup should weigh those constraints.

Pros and cons

• Pros: A wide set of symbolic math, graphing, geometry, spreadsheet, statistics, and programming tools lives in one free system.
• Pros: Offline browser use and compatibility modes for Maple, MuPAD, and TI calculator CAS software offer flexibility for different setups and prior experience.
• Pros: The Giac library can be integrated into C++, Python, Java, and JavaScript programs.
• Cons: The browser version is slower and less complete than compiled desktop versions, limiting it as a substitute for desktop use.
• Cons: Incomplete English documentation can make a broad, multi-mode system harder to learn.
• Cons: Some Windows configurations may have 3-D display problems, and some Ubuntu Unity versions may cause crashes or unrecognized keystrokes.
• Cons: Commercial software inclusion requires a dual license, which makes commercial reuse less straightforward than personal or educational use.

Alternatives

Choose GeoGebra if its broad platform coverage, including API access, better fits your workflow; its source code is licensed under EUPL 1.2, while its installers and web services are limited to non-commercial use.

MathPad is another freemium math option, with a free tier of 10 daily credits and three AI Tutor trial messages per day. Consider AI Mathbot for a free basic math solver, or MalMath for a mobile and web freemium option. Mathway offers free access to its solver and calculators, with step-by-step solutions and an optional subscription.

Magma Computer Algebra System is worth considering if an online calculator or an institutional subscription better matches your needs. For other free computer algebra systems, compare Maxima, which is under the GNU GPL, and PARI/GP, which is under GPL v2 or later. Browse more options in Math Solver Apps.

Verdict

Choose Xcas if you want a free, expansive mathematics environment for study, teaching, or technical exploration, especially when symbolic work needs to sit alongside geometry, statistics, spreadsheets, or programming. Its main reason to look elsewhere is practical fit: the browser edition gives up speed and completeness, and the documentation and platform caveats may make a narrower or more polished tool easier to use for your particular work.