Does Notepad++ show all hidden characters?

Yes, it does. The way to enable this depends on your version of Notepad++. On newer versions you can use: Menu View → Show Symbol → *Show All Characters` or Menu View → Show Symbol → Show White Space and TAB (Thanks to bers’ comment and bkaid’s answers below for these updated locations.) On older versions you can look for: Menu View → Show all characters or … Read more

is there an autosave function/plugin for notepad++?

You can find a Notepad++ plugin called AutoSave for autosaving your files here: https://github.com/francostellari/NppPlugins/tree/main/AutoSave (Used to link to https://sites.google.com/site/fstellari/nppplugins but that’s no longer online, cached version is still available here) It autosaves every minute, but it’s configurable, and allows you to choose to save only the current document or all open documents.

Text editor to open big (giant, huge, large) text files

Free read-only viewers: Large Text File Viewer (Windows) – Fully customizable theming (colors, fonts, word wrap, tab size). Supports horizontal and vertical split view. Also support file following and regex search. Very fast, simple, and has small executable size. klogg (Windows, macOS, Linux) – A maintained fork of glogg. Its main feature is regular expression search. It supports … Read more

How to run a program in Atom Editor?

I found Atom editor as good free alternative to Sublime text editor. Not able to find a straightforward way to run a program in Atom editor. In my case, I am trying to run a java program. Please let me know if it’s possible? If yes, please describe the steps to follow.