Freedom251 › Data Visualization Software
Graph
What Graph is
Graph is a free, open-source desktop application for drawing mathematical graphs in a coordinate system and visualizing functions. It plots standard, parametric, and polar functions with configurable colors, line styles, and intervals. Equations and inequalities can be shown with selectable line and shading styles. Graph imports point-series data from tab-, comma-, or semicolon-delimited files and Microsoft Excel, then creates built-in or custom-model trendlines. Its calculation tools find first derivatives, evaluate functions or derivatives at a chosen x-coordinate, and calculate area and curve length. Graphs can be saved as BMP, PNG, JPEG, EMF, SVG, or PDF, or copied as images or editable OLE objects. The official download is a Windows installer requiring Windows Vista or newer. A beta Mac bundle includes Wine, while Linux use is untested by the maker. Manuals and forum support are available.
Who it suits
Graph suits students, educators, and other users who need function plotting, mathematical calculations, or trendlines from imported data. Windows users have the officially supported download; Mac and Linux users face the stated compatibility conditions.
What it does well
- Plots standard, parametric, and polar functions
- Imports delimited files and Microsoft Excel
- Calculates derivatives, area, and curve length
- Exports several image and document formats
- Free GPL open-source distribution
What to know first
- Official download requires Windows Vista or newer
- Mac bundle is beta with possible bugs
- Linux is not tested by the maker
- Steep slopes may display incorrectly
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Graph | Free of charge · Open source under GPL | Free |
As padowan.dk lists them, read 11 Oct 2026. The maker's own page has the final word.
Verdict
Graph offers broad mathematical plotting, data import, calculations, and export without a listed price. Platform support varies, and graphs near vertical asymptotes may need more evaluations for accurate display.
Facts from Graph's own pages
- Calculations
- It can calculate first derivatives, evaluate functions and derivatives at an x-coordinate, and calculate area and curve length. · padowan.dk, 11 Oct 2026
- Compatibility
- The official download is a Windows installer; the maker says Graph requires Windows Vista or newer. · padowan.dk, 11 Oct 2026
- Data and trendlines
- It supports point series, imports data from programs such as Microsoft Excel, and creates built-in or custom-model trendlines. · padowan.dk, 11 Oct 2026
- Data sources
- Delimited point-series files (tab,comma or semicolon separated),Microsoft Excel · padowan.dk, 21 Sept 2026
- Embedded dashboards
- Yes · padowan.dk, 21 Sept 2026
- Export
- Graphs can be saved as BMP, PNG, JPEG, EMF, SVG, or PDF, or copied into another program as an image or editable OLE object. · padowan.dk, 11 Oct 2026
- Free plan
- Yes · padowan.dk, 21 Sept 2026
- Function plotting
- It plots standard, parametric, and polar functions, with options for color, line style, and intervals. · padowan.dk, 11 Oct 2026
- License
- Graph is distributed under the GNU General Public License, which permits free use and redistribution. · padowan.dk, 11 Oct 2026
- Linux support
- The maker says Graph is not tested on Linux, though users have reported running it with Wine. · padowan.dk, 11 Oct 2026
- Mac support
- The maker offers a beta Mac bundle containing Graph and Wine and warns that compatibility issues, bugs, and unfinished features may occur. · padowan.dk, 11 Oct 2026
- Maker
- The documentation identifies Ivan Johansen as Graph's copyright holder. · padowan.dk, 11 Oct 2026
- Notable limitation
- The FAQ says graphs with steep slopes near vertical asymptotes may not always display correctly unless the number of evaluations is increased. · padowan.dk, 11 Oct 2026
- Platform
- desktop · padowan.dk, 21 Sept 2026
- Purpose
- Graph is an open source application for drawing mathematical graphs in a coordinate system and visualizing functions. · padowan.dk, 11 Oct 2026
- Relations
- It can display equations and inequalities with configurable line and shading styles. · padowan.dk, 11 Oct 2026
- Support
- The maker provides manuals in multiple languages and directs users to the Graph forum for help. · padowan.dk, 11 Oct 2026
Where Graph stands on Freedom251
- Data Visualization Software#46 of 98