What is Pluma?
Pluma, fork of 
gedit , is a text editor part of 
MATE Desktop Environment. It supports most standard editor features, extending this basic functionality with other features not usually found in simple text editors. Pluma is a graphical application which supports editing multiple text files in one window (known sometimes as tabs or MDI). Pluma fully supports international text through its use of the Unicode UTF-8 encoding in edited files. Its core feature set includes syntax highlighting of source code, auto indentation and printing and print preview support.
gedit , is a text editor part of MATE Desktop Environment. It supports most standard editor features, extending this basic functionality with other features not usually found in simple text editors. Pluma is a graphical application which supports editing multiple text files in one window (known sometimes as tabs or MDI). Pluma fully supports international text through its use of the Unicode UTF-8 encoding in edited files. Its core feature set includes syntax highlighting of source code, auto indentation and printing and print preview support. 
Recent user activities on Pluma
- POX added Pluma as alternative(s) to Lapce
- POX added Pluma as alternative(s) to JetBrains Fleet
- headlines added Pluma as alternative(s) to Code - OSS (vscode)
Pluma is a text editor that comes with the MATE desktop on various Linux distributions.
It's very simple but functional. It's hard not to give it a positive review since it aims only at one thing and it does that very well.
A NOTE ABOUT THE "FREE" LICENCE:
The Alternativeto.net page for Pluma says it is "free". This is ambiguous because "Free" can mean two different things:
Pluma is both. Most people unfamiliar with software development and licencing will assume Pluma is free in the sense of free beer. But in actual fact Pluma is distributed under GNU General Public Licence, which means you neither have to play for Pluma nor worry that someone is making money at your expense from it nor that the code is restricted. It's not, you can download it, look at it and modify it at will. Great stuff.