Text editors tend to disappear into the operating systems around them. A terminal editor assumes a keyboard, a command language, and a screen made of character cells. A desktop editor assumes windows, menus, a pointer, and a clipboard. On a phone, the same task has to accommodate touch selection and a keyboard that covers half the display. The document may still be plain text, but the act of editing it is shaped by the machine.
Editing before the desktop
On early Unix systems, users often worked through slow terminals. The line editor ed did not keep a modern full-page view on screen. A user addressed lines, issued compact commands, and asked the program to print portions of the file when needed. The interface seems severe now, but it matched expensive, limited hardware and connections that might literally print output on paper.
Full-screen terminal editors changed the relationship between writer and file. Vi made movement and editing commands composable, provided the user learned its modes. Emacs grew in another direction: programmable, extensible, and eventually capable of hosting an extraordinary range of work beyond editing. Both families remain in active use. They are efficient over remote connections and allow experienced users to keep their hands on the keyboard, advantages that outlived the constraints that first shaped them.
Editors on personal computers
DOS included tools such as EDLIN and later a friendlier full-screen Editor. Windows established a different baseline with Notepad: a small graphical window, standard menus, mouse selection, and familiar clipboard commands. Its virtue was availability. More ambitious Windows editors added regular-expression searches, multiple documents, syntax highlighting, macros, and project tools, but often kept those familiar conventions.
The Macintosh treated text as part of a graphical and typographic environment from the beginning. TeachText and SimpleText opened small documents on classic Mac OS. TextEdit took on that utility role in Mac OS X while drawing on the text system inherited from NeXT. Beside these built-in applications, commercial and independent editors served programmers, publishers, and writers who needed more control.
Linux never had to choose one model
Linux distributions inherited command-line editors and added graphical choices through desktop environments such as GNOME and KDE. This abundance can confuse a new user, but it reflects the variety of work done with text. A system administrator connected to a server has different needs from someone taking notes at a laptop. A programmer may want language-aware navigation; another user may want a window with almost no controls at all.
From local application to browser tab
Mobile devices forced another reconsideration. Precise cursor placement and large command sets are awkward on glass, while short notes and synchronized documents fit mobile use well. Browsers then became an application environment of their own, offering mature text input, local storage, downloads, and accessible layout on several operating systems.
None of these stages made the previous editor obsolete. Line editors still rescue broken systems. Terminal editors remain central to remote work. Native desktop applications have access to local files and operating-system features that a web page may not. Browser tools are convenient when installation is impossible or unnecessary. The history is not a contest with a winner; it is a record of different interfaces meeting different constraints.