Alternatives to TeXstudio
Full-featured LaTeX editor with completion and inline preview. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
TeXstudio
Full-featured LaTeX editor with completion and inline preview.
Replacements
Listings that take over the same core job as TeXstudio.
Kile
KDE LaTeX editor with a structured project view.
Kile is a KDE LaTeX editor with a structured project view and symbol palettes, limited to Windows and Linux and pulling in KDE libraries.
TeXShop
Native macOS LaTeX editor bundled with MacTeX.
TeXShop is a native macOS LaTeX editor bundled with MacTeX with tight SyncTeX integration, but it runs only on macOS and has a dated interface.
Similar software
Related functionality, not a direct replacement.
GNU Emacs
An editor that is really a Lisp environment, extensible to the point where people run their email, calendar and shell inside it.
Visual Studio Code
Microsoft's code editor, free to use but shipped under a Microsoft licence rather than an open one.
Vim
The editor that is already on every server, with a graphical build for Windows and a licence that asks you to donate to Ugandan children.
Kate
KDE's text editor: syntax highlighting for over 400 languages, split views, multi-cursor editing and an embedded terminal.
Sublime Text
A fast native editor for code and prose, paid for but with an evaluation that never stops working.