CloudMounter - CloudMounter for Mac OS X: map Dropbox as network drive, mount OneDrive, Google Drive and Amazon S3; FTP client and WebDAV client.
SmallDevTools - Handy developer tools with a delightful interface
Internxt - Store your files in total privacy
LaunchKit - Open Source - A popular suite of developer tools, now 100% open source.
WatermarkRemover.io - WatermarkRemover.io helps users automatically remove watermark from images with no manual selection required.
Profitable developer tools database - A database of 103+ hand-curated profitable developer tools