Yacas
Yacas: A broad, programmable open-source CAS for symbolic and numerical mathematics. Ranked #49 of 68 in Math Solver Apps by our editors (5.0/10); pricing: Free plan; best for lightweight open-source CAS.
At a glance
- Editor score5.0 / 10
- PricingFree plan
- Best forLightweight open-source CAS
- Free planYes
- Paid fromFree
- Facts checked22 Sep 2026
Where it wins
- Broad coverage across calculus, algebra, statistics, and numerical methods
- Supports arbitrary-precision arithmetic and user-defined symbolic rules
- Runs on web, desktop platforms, Jupyter, and an API
Where it doesn't
- The listed current stable release dates to 2020
- Not designed for photo-based homework solving
- Its workflow favors programmable mathematics over guided solving
Our verdict on Yacas
Yacas is a general-purpose computer algebra system and programming language for symbolic manipulation of mathematical expressions. It is aimed at students, educators, researchers, and developers who need programmable symbolic and numerical mathematics rather than photo-based homework solving. The system combines arithmetic, elementary functions, expression simplification, calculus, algebra, differential equations, linear algebra, plotting, statistics, number theory, probability, and numerical methods. Arbitrary-precision arithmetic and user-defined symbolic manipulation rules make it suitable for users who want to define and extend mathematical workflows.
Breadth is Yacas’s clearest strength. Its feature set reaches from routine arithmetic and simplification to solvers, differential equations, polynomial work, linear algebra, and plotting. That makes it a practical fit for varied mathematical experimentation without narrowing the product to one subject area. The command-line and graphical interfaces support different working styles, while the programming-language foundation gives technically minded users more control than a calculator-style app. Buyers seeking a broad symbolic engine should find the scope compelling; those wanting a guided, image-based answer service should look elsewhere.
Platform coverage also supports flexible adoption. Yacas is available through native console and graphical applications for Windows, macOS, and Linux, alongside a web application built with JavaScript and WebAssembly. It also provides an API and a Jupyter Notebook kernel, with Jupyter listed as its integration. The current stable release listed is version 1.9.1, dated 2020, which may matter to buyers who prioritize a newer release cadence. Yacas is therefore a strong choice for lightweight, open-source computer algebra across desktop, browser, and notebook environments, but a less suitable option for users who want a polished consumer workflow centered on step-by-step homework assistance.
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Yacas pricing
Yacas fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Photo input | Not verified |
| Handwriting input | Not verified |
| Step-by-step explanations | Not verified |
| Subject coverage | Broad |
| Platform coverage | Multiplatform |
| Offline mode | Not verified |
| Deployment | Cloud, Desktop |
| Platforms | Web, Windows, macOS, Linux |
| Support | Community, Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 1 integrations: Jupyter Notebook |
| Pricing | Free plan |
| Website | yacas.org |
| Facts checked | 22 Sep 2026 |
Yacas integrations
Yacas lists 1 integrations on its own site.
- Jupyter Notebook
Alternatives to Yacas
- Maple CalculatorA broad mobile solver with camera and handwriting input, plus offline graphing.9.4
- SymbolabA broad math study tool pairing worked solutions with practice, graphing and photo input.9.2
- GeoGebraA broad, free mathematics toolkit with adaptive practice, classroom tools, and offline apps.9.1
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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