Solaar is an open-source application that allows Linux users to manage a variety of Logitech devices, including keyboards and mice. Many users praise Solaar for its lightweight interface and functionality compared to the bulkier Logitech software on Windows. It addresses common issues such as Bluetooth connectivity by enabling users to pair devices seamlessly and even recover from situations like lost dongles. Users appreciate the open-source nature of Solaar, citing it as a testament to community-driven development, and its inclusion in standard Ubuntu repositories enhances its accessibility. Some users are also exploring alternatives for wired keyboards that replicate the feel of specific Logitech wireless models, emphasizing their need for non-Bluetooth solutions.