GTK graphical front end for Qalculate!, a cross-platform desktop calculator with unit conversion, symbolic math and arbitrary precision.
1.3K93C++GPL-2.0Updated last month
1 alternative
Best open-source alternatives to Microsoft Calculator (2026)
Looking for a free, open-source alternative to Microsoft Calculator? These 1 projects can replace it. Each one passed our quality screening and is explained in plain words, so you can compare stars, license and maintenance at a glance.
Quick comparison
| Project | Stars | License | Last commit |
|---|---|---|---|
| Qalculate/qalculate-gtk | ★ 1.3K | GPL-2.0 | last month |
FAQ
- Is there a free, open-source alternative to Microsoft Calculator?
- Yes. The most popular open-source alternatives to Microsoft Calculator on Repolode are qalculate-gtk.
- Which Microsoft Calculator alternative should I choose?
- qalculate-gtk has the most GitHub stars and is released under GPL-2.0. Compare the license and last commit of each option in the table above before choosing.
How this list is made: AI reads each project's documentation to match it with products it can replace, every project passes our quality screening, and the list is ranked by GitHub stars. Stars updated Nov 6, 2026. How Repolode works