OpenSCD, the SCL editor for your browser, allows you to engineer and validate IEC 61850 substations.
klystrack is a tracker for making C64/NES/Amiga-style chiptunes on a modern platform. Here are some features. Sound: Additive synthesis with filters (think SID, Atari, NES etc.); Hard sync and ring modulation (like SID); FM synthesis (think Adlib, MSX, OPL2 etc.); Wavetable for samples or custom waveforms to be used in synthesis (think Amiga, SNES); Built-in wave generator and editor; Programmable instruments not limited to simple arpeggios. Sequencer: Tracker with free positio
Beast is a music composition and modular synthesis application. As input methods, it offers a multitrack editor, a piano roll, and supports pattern editing. It has a wide range of technical abilities like sequencing, unlimited undo/redo history, real-time synthesis with multiprocessor support, full duplex 32-bit audio rendering, seeking at sample granularity, on demand loading of partial wave files, on the fly decoding of various sample formats, aliasing free oscillators, and full scripting supp
vile is a text editor which is extremely compatible with vi. It has extended capabilities in many areas, including multi-file editing and viewing, mouse support, infinite undo, additional operators, and rectangular operations. Vile has an optional Perl interface for UNIX and NT. It can also be built as "xvile", which is fully X-aware, or "winvile" for Win32, with scrollbars, menus, etc.
Deadpixi sam is an updated version of the venerable sam text editor. Sam was originally written for Ninth Edition Research Unix and then ported to Plan 9 from Bell Labs. It combines a powerful, ed(1)-like editing language with structural regular expressions and remote editing capability. Deadpixi sam is an updated, standalone version that runs on Linux systems and supports scalable fonts and other modern X features.