Xcas

Xcas suits students and technically minded users who need a flexible environment for symbolic mathematics, graphing, geometry, statistics, and programming. Its breadth and free GPL3 license are strong reasons to consider it; its slower, less complete browser version and platform-specific problems call for care.

Overview

Founded in 2000, Xcas provides an interface to the Giac computer algebra system. It reaches well beyond equation solving, combining mathematical tools with spreadsheets and programming. That makes it a plausible replacement for a high-end graphing calculator and a capable setting for coursework or exploration, but potentially more system than someone seeking quick answers needs.

Compatibility modes for Maple, MuPAD, and TI calculator CAS software can help users accustomed to those systems carry familiar syntax into Xcas. The English overview describes the documentation as incomplete, though tutorials, reference guides, and a forum offer support.

Key features

Symbolic mathematics

Xcas handles arbitrary-precision arithmetic, polynomial operations, simplification, equation solving, calculus, and linear algebra. This range is useful for working through expressions and mathematical problems, rather than relying only on numerical answers.

Geometry and graphs

Programmable dynamic 2-D geometry, 3-D geometry, and graphs give users room to explore relationships visually and interactively. The flexibility is valuable for learning and investigation, although 3-D display problems on some Windows setups may make that part of the experience unreliable.

Spreadsheet, statistics, and programming

The spreadsheet supports relative and absolute references as well as formal objects in cells. Its 1-D and 2-D statistics include regressions, making it useful for more than symbolic work. Programming tools include functions, variables, tests, loops, a program editor, and an interactive debugger, with C-like, Maple, MuPAD, and TI89 syntax modes. That breadth suits users who want to build and inspect calculations, but is more complexity than a basic solver requires.

Developers can use the Giac calculation library from C++, Python, Java, and JavaScript programs. Xcas also describes interfaces with LaTeX and TeXmacs, extending its relevance beyond its own interface.

Pricing

Xcas costs free. The free plan is a GPL3-licensed computer algebra system, with no paid tier described. It is a strong fit for individual learners and users who want broad mathematical tools without a software charge. Commercial software that includes Xcas requires contacting its makers about a dual license, so the free terms should not be assumed to cover commercial inclusion.

Platforms

Xcas supports Android, iOS, Linux, macOS, the web, and Windows, and it offers offline use. The browser version can run locally without installation or an internet connection, but it is slower and less complete than compiled desktop versions; users who need the full experience should favor a desktop build.

For mobile access, the maker says Android users can open Xcas in Firefox or Chrome and iOS users can use a browser, while noting that the iOS instructions have not been tested by the author. The Mac OS 14 package is unsigned, and the installation instructions describe allowing a non-signed package. On Ubuntu, some versions of the Unity environment have been associated with crashes or unrecognized keystrokes.

Who it's for

Xcas is best suited to students, educators, and technically minded users who want symbolic mathematics alongside geometry, graphing, statistics, spreadsheets, or programming. Its potential role as a high-end graphing-calculator replacement makes it relevant for coursework and mathematical exploration. A reader who only needs a quick, guided answer to a routine problem may prefer a more focused solver.

Pros and cons

• Pros: Broad mathematical coverage combines symbolic algebra, calculus, linear algebra, graphing, geometry, statistics, and spreadsheets in one environment.
• Pros: Programming tools, several syntax modes, and a Giac library usable from four programming languages suit users who want to automate or extend calculations.
• Pros: The free GPL3 plan and offline browser mode make it accessible without a software charge or a network connection.
• Cons: The browser version is slower and less complete than compiled desktop builds, so it is a compromise for users who need full capability.
• Cons: The English documentation is described as incomplete, which may make the system's many tools harder to learn.
• Cons: Some Windows 3-D setups and Ubuntu Unity versions have reported display problems, crashes, or unrecognized keystrokes; Mac OS 14 users also face an unsigned installer.
• Cons: Commercial inclusion requires arranging a dual license, so the free plan is not a blanket commercial-use permission.

Alternatives

For a wider selection of options, see Math Solver Apps.

• GeoGebra is worth considering if you want a free-plan option across mobile, desktop, and web platforms; its source code is licensed under EUPL 1.2, while its installers and web services are limited to non-commercial use.
• MathPad may suit readers who want an AI tutor alongside a solver: its free plan provides 10 daily credits and three AI Tutor trial messages per day, while its Basic plan costs $14.99 a month for 500 monthly credits.
• MalMath is a more focused choice for Android, iOS, or web solver use; it has a free plan and a 2.99 USD one-time Premium in-app purchase.
• PARI/GP is another free, GPL-licensed computer algebra option for Android, Linux, macOS, web, and Windows; its optional packages are distributed separately.
• AI Mathbot is a free-plan alternative for mobile and web users seeking a basic math solver; it also offers Pro subscriptions on monthly or yearly terms.
• Mathway is a solver alternative with free access to its solver and calculators, and step-by-step solutions; an optional subscription unlocks additional access.
• SnapXam may fit readers seeking algebra, trigonometry, and calculus explanations through APIs, including a free Solve API plan with step-by-step explanations.
• AllMath AI Math Solver offers a free plan with 70,000 total credits, a basic model, priority response times, and 24/7 support; it may suit users who want an AI solver with a stated credit allowance.

Verdict

Choose Xcas if you want a free, broad computer algebra environment that can cover symbolic work, visual mathematics, statistics, and programming, including offline use. Its range is the main reason to choose it; if you need a faster, more complete browser experience or depend on trouble-free 3-D or Ubuntu Unity behavior, look elsewhere.