TagSpaces - TagSpaces is an open source platform for personal data management. With TagSpaces you can manage and organize the files on your laptop, tablet or smart phone.
Everspace - Everspace is an Arcade, Action-Adventure, Space, Sci-Fi, First-person Shooter and Single-player video game developed and published by RockFish Games.
allTags - allTags is a free, tag based file management application.
Evochron Legacy - Evochron Legacy is a Space, Sandbox, Strategy, Combat, Exploration, Open-World, Co-op, Single and Multiplayer Flight-Simulation by Star Wraith 3D Games.
Elyse - The free version allows up to 30 tags.
The Battle of Sol - The Battle of Sol is a Sci-Fi, Sandbox, Space, Strategy, First-person Shooter and Single-player Simulation created and published by Bit Planet Games LLC.