What is kupfer?
Kupfer is a command tool heavily inspired by 
Quicksilver ; you do not use it to search your files, you use it to summon an application or document quickly by typing the first parts of its name. Kupfer is written using Python and has a flexible architecture. Objects that it can access are implemented in plugins, and new plugins can be written quickly. The philosophy of Kupfer is simplicity. The implementation is simple, makes the easy things work first, and does not overdesign unnecessary parts of the program. When you run kupfer, it launches, then anytime you type Kupfers keybinding -- immediately its window is presented ready for a new query.
Quicksilver ; you do not use it to search your files, you use it to summon an application or document quickly by typing the first parts of its name. Kupfer is written using Python and has a flexible architecture. Objects that it can access are implemented in plugins, and new plugins can be written quickly. The philosophy of Kupfer is simplicity. The implementation is simple, makes the easy things work first, and does not overdesign unnecessary parts of the program. When you run kupfer, it launches, then anytime you type Kupfers keybinding -- immediately its window is presented ready for a new query.Comments and Reviews
Said about kupfer as an alternative
Realy fast, doesn't crash like Synapse on xubuntu 16.04.5.
Synapse Kupfer, though its development is stalled, is still very usable under current Ubuntu versions.
xlin Clipboard management functionality. Key-based access to system clipboard history.
Clipman Tags
- keystroke-launcher
It is developed actively
https://github.com/kupferlauncher/kupfer
Kupfer is great because it learns and it learns faster than other launchers.
Compared to the hotkey search in Mint Kupfer is the future. While Mint's launcher keeps trying to tell me that "T" and "Th" would open "gThumb" it took Kupfer 1(!) time to get it. Stupid Mint linux.