With use of the makecell packages:
\documentclass{article} \usepackage{geometry}% otherwise the text width is to small \usepackage{makecell} \renewcommand\theadfont{\bfseries\normalsize} \setcellgapes{3pt} %---------------------------------------- for showing page layout \usepackage{showframe} \renewcommand\ShowFrameLinethickness{0.15pt} \renewcommand*\ShowFrameColor{\color{red}} %---------------------------------------------------------------% \begin{document} \begin{center} \begin{tabular}{ |*{5}{c|} } \hline \thead{Framework} & \thead{Linguaggio} & \thead{Licenza} & \thead{Prerequisiti} & \thead{Tipologia} \\ \hline Pybossa & Python & Open Source & & Applicazioni Web \\ \hline CrowdThruth & PHP & Open source & & Applicazioni Web\\ \hline Ionic & Angularjs & Open source & \makecell{Node.js\\Apache Cordova} & \makecell{Native\\Cross Platform}\\ \hline \makecell{Appcelerator\\Titanium} & Javascript & Open Source & \makecell{Node.js\\ Java} & Cross platform \\ \hline Xamarin & C\# & Open Source & Visual Studio & \makecell{Native\\Cross Platform} \\ \hline Django & Python & Open Source& Python & Applicazioni web \\ \hline \end{tabular} \end{center} \end{document}

Addendum:
Today, when tabularray package is available, I would write your table as follows:
\documentclass{article} \usepackage{geometry} % otherwise the size of \textwidth is to small \usepackage{xcolor} \usepackage{tabularray} \begin{document} \begin{center} \begin{tblr}{colspec = { *{5}{X[c, m, cmd=\linespread{0.84}\relax]} }, row{1} = {font=\bfseries, abovesep = 4pt}, row{2-Z} = 7ex, hlines = {gray!30}, vlines = {gray!30} } Framework & Linguaggio & Licenza & Prerequisiti & Tipologia \\ Pybossa & Python & Open Source & & Applicazioni Web \\ CrowdThruth & PHP & Open source & & Applicazioni Web \\ Ionic & Angularjs & Open source & Node.js Apache Cordova & Native Cross Platform \\ Appcelerator Titanium & Javascript & Open Source & Node.js Java & Cross platform \\ Xamarin & C\# & Open Source & Visual Studio & Native Cross Platform \\ Django & Python & Open Source & Python & Applicazioni web \\ \end{tblr} \end{center} \end{document}
where tblr is defined in tabularray package. Above MWE gives:
