Graphmatica...

is a powerful, easy-to-use, equation plotter with numerical and calculus features:

• Graph Cartesian functions, relations, and inequalities, plus polar, parametric, and ordinary differential equations.
• Up to 999 graphs on screen at once.
• Data plotting and curve-fitting features.
• Numerically solve and graphically display tangent lines and integrals.
• Find critical points, solutions to equations, and intersections between Cartesian functions.
• Print your graphs or copy to clipboard in bitmap or vector format in black-and-white or color. Or export to JPEG/PNG files.
• On-line help and demo files make getting up to speed a snap.

See the complete feature list and large screen shot for Windows...for Mac OS X...for iOS.

Free Trial Download Download Graphmatica 2.4b for Windows [848KB] Runs on all modern 32-bit and 64-bit versions of Windows (XP/Vista/7/8.x/10). English only—see translation pages for other languages. Download Graphmatica 2.4.1 for Mac OS X [2.2MB] Runs on Intel-based Macs using OS X 10.6 or higher. English, Français, Español, Dansk Installing Graphmatica See the installation instructions if you're not sure what to do once you've downloaded the program. What's new 6/11/17: Version 2.4b for Windows now available 4/29/17: Version 2.4a for Windows (English) re-posted (should now allow seamless installation over version 2.4) 4/26/17: Version 2.4.1 for Mac OS X now available on the Mac App Store 4/22/17: Version 2.4.1 for Mac OS X now available 12/13/15: Windows 10 support--I set up a Windows 10 VM today and put the program through its paces. Everything seems to work fine. If you see anything that doesn't work, let me know right away and I'll fix it! 12/16/14: Version 2.4.1 for iOS 5.1.1 - 10 now available The what's new page has a log of older changes. Support Check the bug report page periodically for information on known bugs, workarounds, and patch releases. View the Frequently asked questions. Browse User-contributed downloads. View the Accessibility policy.

Ordering Order now online, by mail, or FAX. Translated versions Graphmatica en Español Graphmatica en Français Graphmática em Portugues Graphmática em Portugues Graphmatica - dansk Graphmatica in Italiano Graphmatica - svensk Graphmatica - Polski Graphmatica στα Ελληνικά Korean -- courtesy of ArmTech System Inc. Japanese -- courtesy of LightStone Corp. I would love to see this list grow! Contact me if you are interested in translating the program and/or help file into your native language. Distributors Important information for Shareware distributors. Please read before you download the program to distribute it.