LE has many block operations with stream and rectangular blocks, can edit both unix and dos style files (LF/CRLF), is binary clean, has hex mode, can edit text with multi-byte character encoding, has full undo/redo, can edit files and mmap-able devices in mmap shared mode (only replace), has tunable syntax highlighting, tunable color scheme (can use default colors), tunable key map. It is slightly similar to Norton Editor, but has more features.
rpl is a Unix text replacement utility. It will replace strings with new strings in multiple text files. It can scan directories recursively and replace strings in all files found. The search can be limited to files with certain filename suffixes (e.g. '.html', '.c', etc.). It includes source, a build script, and a man page. It should work on most flavors of Unix. Linux/Intel, Linux/PPC, and source RPMs are available, as are binaries for other OSes, including Mac OS X.
Bibcursed is a simple curses-based editor for BibTeX bibliography files, especially useful for those who have to maintain a large number of references for a major piece of documentation, like a PhD thesis. It performs everyday functions such as adding, removing and viewing reference entries. Intelligent prompting for fields is used when adding entries so that authors do not have to rely on memory for knowing which fields can and cannot be used for different entry types.
Setedit is a text editor specially designed for programmers. It has a nice interface with mouse support, menus and windows (text mode). The editor is a very good choice for people with DOS background, especially people accustomed to Worstar and Borland editors. The editor has overlapped windows so you can see more than one file at the same time, configurable syntax highlighting, macros, rectangular selection, block indentation, as well as customizable keyboard shortcuts and menus.
jake (Jointly Administered Knowledge Environment) is a reference source which makes finding, managing, and linking online journals and journal articles easier for students, researchers, and librarians. jake does this by managing online resource metadata with a database union list, title authority control, linking tools, and a local holdings layer.
The Remembrance Agent (RA) watches your over your shoulder and continuously updates a list of documents relevant to what is being typed or read in an Emacs buffer. Suggestions are then displayed in their own window at the bottom of the frame, and are continually updated every few seconds. The RA uses a multi-field information-retrieval back-end called Savant that can index several different kinds of files, including email archives, HTML, LaTeX, and plain text format.
KDevelop is an integrated development environment which makes the creation and development of applications an easy task even for beginners. Highlights of the current release are: an application wizard for easy creation of KDE 4, Qt4, GNOME, and terminal C/C++ projects, full project management, a syntax-highlighting editor, code completion, an integrated dialog editor for the Qt/KDE GUI libraries, an internal debugger, a full-featured class browser with class tools, CVS and SVN support, an integrated HTML-based help system offering manuals and class-references, and extensive search mechanisms to browse sources and documentation.