Freeplane - Freeplane is a powerful and free software for building mind maps.
Audio Record Wizard - How to record streaming audio with the streaming audio recorder - Audio Record Wizard.
Linked Ideas - A macOS/iOS apps to treat ideas as links of concepts.
Leawo Music Recorder - Leawo Music Recorder is a superb but easy-to-use music recording software program that lets you record free music from any built-in input audio, computer audio and online music sources, like YouTube, Spotify, AOL Music, Last.fm, etc.
SuperNotecard - Introducing SuperNotecard. SuperNotecard is an online writing tool that features virtual notecards to help arrange facts or scenes, track details, organize paragraphs, and clarify your composition process.
Audicable - AudiCable Audio Recorder is an application that easily converts music from popular platforms like Spotify, Tidal, Pandora, Apple Music, YouTube Music, Deezer, or any music platform. It effortlessly preserves the original audio quality and ID3 tags.