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Avoids vendor lockin: Create, export/import/convert questions to common/standard formats. Includes text and images. Installs on: Laptop, desktop, server or cloud. (Windows 10/11 - Linux - Mac OS, all production grade) Available on: Android & Safari, Firefox, Chrome, Edge, Opera, Brave browsers Phone Desktop/Laptop/Tablet Submited QST Creating a question could not be simpler! Create Math and Chemistry equations $$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$$ $$\mathrm{Hg}{\phantom{A}}^{2+}\stackrel{\mathrm{I}{\phantom{A}}^{-}}{\to }\mathrm{HgI}{\phantom{A}}_2\stackrel{\mathrm{I}{\phantom{A}}^{-}}{\to }[\mathrm{Hg}{\phantom{A}}^{\mathrm{II}}\mathrm{I}{\phantom{A}}_4]{\phantom{A}}^{2-}$$ $$x\mathrm{Na}(\mathrm{NH}{\phantom{A}}_4)\mathrm{HPO}{\phantom{A}}_4\stackrel{\mathrm{\Delta }}{\to }(\mathrm{NaPO}{\phantom{A}}_3){\phantom{A}}_x+x\mathrm{NH}{\phantom{A}}_3\uparrow +x\mathrm{H}{\phantom{A}}_2\mathrm{O}$$ We support our Open Source software.