Formula editor

[Image:MathematicaTypesetExpression.png|thumb|220px|A typeset mathematical expression]
A formula editor is a computer program that is used to typeset mathematical formulas and mathematical expressions.
Formula editors typically serve two purposes:

They allow word processing and publication of technical content either for print publication, or to generate raster images for web pages or screen presentations.
They provide a means for users to specify input to computational systems that is easier to read and check than plain text input and output from computational systems that is easy to understand or ready for publication.

Content for formula editors can be provided manually using a markup language, e.g. TeX or MathML, via a point-and-click GUI, or as computer generated results from symbolic computations such as Mathematica.
Typical features include the ability to nest fractions, radicals, superscripts, subscripts, overscripts and underscripts together with special characters such as mathematical symbols, arrows and scalable parentheses.
Some systems are capable of re-formatting formulae into simpler forms or to adjust line-breaking automatically, while preserving the mathematical meaning of a formula.

Notable systems

Name	Platform	Output formats	TeX support	MathML support	Drawing / annotation support	Computation support	Notes
Firemath							Addon for the Firefox web browser.
Ket		ket, TXT, PNG, LaTeX, HTML					Provides commands to enable the user to solve back-of-the-envelope calculations
LibreOffice Math	Linux, macOS, Windows	PDF, MathML
MathMagic	Windows, macOS, Android, iOS	PDF, SVG, EPS, PNG, JPG, BMP, GIF, PICT, WMF, TIFF, LaTeX, MathML, ASCIIMath, Zoho					Interoperates with MS Word, Wolfram Alpha, MathJax, Google Docs, MathType, Wiki equations
MathCast							Open source
MathType	Windows, macOS	WMF, EPS, GIF					Integrates with Microsoft Word through OLE
Radical Pie	Windows	SVG, PDF, EMF, PIE					Integrates with Microsoft Word through OLE