"... Nuspell aim is to be integrated in mainstream office suites, web browsers, email clients, computer-assisted translation services and other applications working with text. Speed, accuracy, documentation and maintainability are the main advantages that put Nuspell at the front of contemporary spell checking solutions ...":
https://nuspell.github.io/

"... Left is a distractionless writing tool with auto-complete, synonyms, writing statistics, markup navigation and a speed-reader ...":
https://hundredrabbits.itch.io/left

sFTP Client:
https://www.sftpapp.com/

CudaText is a cross-platform text editor:
http://www.uvviewsoft.com/cudatext/

SynWrite combines great ideas from many well known editors into a single, freely available product. It's a complete environment for Web workers, coders and writers:
http://www.uvviewsoft.com/synwrite/

Marp is the simplest presentation writer with Markdown:
https://yhatt.github.io/marp

K9 Web Protection is a free Internet filter and parental control software:
http://www1.k9webprotection.com/

Helium - music cataloger, tag editor, cd ripper, audio converter, mp3 and flac analyzer, duplicate finder, player and music scrobbler - all in one:
https://www.imploded.com/

RecycleBinEx is a powerful and easy to use recycle bin manager for Windows Operating System. It extends and enhances the Windows recycle bin, and let you use many extra features in it:
http://www.fcleaner.com/recyclebinex