Supports WAV and DLS files.
Supports recording from MIDI devices.
sourceforge.net/projects/jfmusic

Polyphone is an open-source soundfont editor for creating musical instruments, available for Windows, Mac OS X and Linux.

Features:
www.polyphone.io
- editing of sf2, sf3, sfz and sfArk file formats
- compatible with jack and asio audio servers
- built-in synthesizer, controlled by a virtual keyboard or midi signals
- automatic recognition of root keys
- automatic loop of samples
- simultaneous editing of parameters
- specific tools for musical instrument creation
- recorder to keep a trace of what is played in a .wav file
- soundfont browser connected to the online repository
github.com/davy7125/polyphone
community.linuxmint.com/software/view/polyphone
The most complete music production package
The creative experience. Only Cakewalk by BandLab offers: advanced technology, effortless workflow, and an interface that amplifies inspiration.
Compose ~ Easily compose complete songs and performances with creative songwriting tools and instruments
Record ~ Capture inspired performances with pristine quality and unlimited audio and MIDI tracks
Edit ~ Fix mistakes, arrange parts, and manipulate pitch, time, and any other aspect of your recordings
Mix ~ Achieve pristine pro-studio sounds and create big, clear, dynamic mixes with advanced mixing tools
Master ~ Polish your finished mixes to perfection with built-in mastering tools
Share ~ Export and publish your songs directly to YouTube, SoundCloud, Facebook and more
www.bandlab.com/products/cakewalk

EArt Audio Editor is a all-in-one audio editor, recorder, converter, splitter, joiner and player. A full set of effects and editing features are included for professional sound production. When editing audio files you can copy, cut, paste and mix any portion of audio files. If required, you may add effects like Amplify, Fade In, Fade Out, Delay, Reverse, Noise Reduction, etc. MP3, WMA, WAV, OGG, VOX, RAW and many more audio formats are all supported for direct audio editing.
eartmedia.com/audio-editor/index

Anvil Studio™ is a free Windows 11, 10 / 8.x / 7 program designed for people who want to:

Audiodope is an audio editor. You can load and listen to music files of various formats such as wave, MP3, WMA, etc. You can also edit part or the whole stream with functions like copy, cut, paste, insert and delete. You may modify any part of the stream by applying audio effects and synthesize sound files.

Get it Free. This free audio editor is available for non-commercial use only. WavePad free audio editing software does not expire and includes many of the features of the master’s version. If you are using it at home, you can download the free music editing software here. You can always upgrade to the master’s edition at a later time, which has additional effects and features for the serious sound engineer. No signup required.

Stargate is an all-in-one DAW and plugin suite, designed to be a comprehensive solution for music production, with a focus on providing unique and innovative features, especially for EDM production.

AudioMass lets you record, or use your existing audio tracks, and modify them by trimming, cutting, pasting or applying a plethora of effects, from compression and paragraphic equalizers to reverb, delay and distortion effects. AudioMass also supports more than 20 hotkeys combinations and a dynamic responsive interface to ensure ease of use and that your productivity remains high. it is written solely in plain old-school javascript, weights approximately 65kb and has no backend or framework dependencies.