Apps similar to Clipman for Wayland include CopyQ, which is free and open source. Other options are Ditto, Rememory, Planck and CopyCat Clipboard. You're spoiled for choice with Clipboard Managers like Clipman for Wayland: we list more than 25 alternatives for Mac, Windows, Linux, iPhone and iPad.
everclip is a headless, event-driven X11 CLIPBOARD history daemon and pipe-first CLI. It stores stable history records in a Turso database (sqlite3) while keeping each original X11 target payload in a deduplicated blob store.
simple clipboard manager for Wayland, built in Rust. It saves a history of your clipboard content, and lets you paste things you've copied earlier. It also lets you configure "favorite" pastes for strings you need often.
