Guitar Pro is a much-loved guitar tablature (chords, six line-spectrum, BASS four-line stave) drawing, viewing, printing, listening and learning software by guitarists (from France). At the same time, it is also an excellent MIDI sequencer and MIDI production helper tool, which can output the standard format of MIDI.
Audials One is a very famous all-in-one type of music software from Romania, which integrates music search, music download, music play, and music conversion in one place. It comes with simple operation and concise UI, and supports all popular audio formats. Its built-in audio/video format converter can be used to play and convert most kinds of audio/video files with ease, including the DRM protected files.
Apowersoft Streaming Audio Recorder (AKA: 录音精灵) is a user-friendly and very practical streaming audio recording tool from Hong Kong, China. It can completely and clearly record any sound from computer speakers and microphone: no matter it's voice, singing from microphone; or online radio, music, video playing through a sound card.
FamiTracker is a professional but simple and easy-to-use 8-bit digital music producing freeware for NES/Famicom (FCDS) emulators. It comes with concise UI and powerful features, supports music import/export, automatically generates NSF file (so that the music you produce can be played in emulators), and is capable of converting music format. It's regarded as a must-have tool for many 8-bit game music producers.
REAPER (short for Rapid Environment for Audio Prototyping and Efficient Recording) is a powerful and professional multi-track audio recording, arranging, editing, mixing and rendering tool primarily designed by former developers from Winamp. It is suitable for both audio enthusiasts and professionals.
GoldWave is a classic (with more than 20 years of development history) and very professional lightweight (less than 10 MB) digital audio editor from Canada, with the most advanced and complete audio editing features in the same heavyweight software.