What it does
Epsilon is Lugaru Software's EMACS-style programmer's editor. The official site describes versions for Windows, Linux, macOS, FreeBSD, OS/2, and DOS, and links to its online manual, downloads, and update history.
Epsilon is a fit for programmers who prefer a highly configurable, command-oriented editor and its EMACS-style workflow. Lugaru continues to publish version 14 updates and documents language modes and editor commands on its site. The vendor also says Intel-based Epsilon 14 on macOS will be affected by Apple's 2027 support change and that a native Apple Silicon version is in development, without giving its release date.
Strengths
- The editor is explicitly designed for programming and follows an EMACS-style command model.
- The vendor lists support for several desktop and legacy operating-system families.
- An online manual and update history are available from the official site.
Watch out for
- The official site says a native Apple Silicon build is still in development while Intel-based Epsilon 14 is affected by Apple's planned 2027 support change.
Best for
- Programmers who prefer EMACS-style editing and want a highly configurable editor across multiple operating-system families.
Sources
- Lugaru Software Ltd. — Epsilon Programmer's Editor (Oct 26, 2026)