Sociall (Beta) - A secure and private decentralised social network for all.
WinDirStat - WinDirStat is a disk usage statistics viewer and cleanup tool, inspired by KDirStat.
Manyverse - A social network off the grid
WizTree - WizTree quickly finds the files and folders using the most space on your hard drive. It scans the MFT (Master File Table) instead of crawling the entire disk which makes it very fast.
data.world - The social network for data people
TreeSize - TreeSize tells you where precious disk space has gone to.