Microsoft Word, Google Docs, Overleaf, LibreOffice - Writer, TeXstudio, AbiWord, LyX, Texmaker, Word Online, Kile, TexitEasy, TeXnicCenter, TeXpert, Twake, Apache OpenOffice Writer, Verbosus: Online LaTeX Editor, Curvenote, ShareLaTeX, Papeeria, \Bluelatex, Latexila are some alternatives to Authorea.