Copycat. A tool that reads and writes anything on your clipboard, from any computer.

less.software/copycat
by @georgemandis

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Updates

July 2026
  • fix(windows): transcode CF_UNICODETEXT (UTF-16) + wrap HTML in CF_HTML
  • fix(linux): live change_count + persistent X11 selection service
June 2026
  • fix: add fingerprint to build.zig.zon for Zig 0.16.0 clean builds
  • Add build.zig.zon with minimum_zig_version pinned to 0.16.0
May 2026
  • docs: add Windows and Linux format tables, CF_DIB/BMP note, fix .deb …
  • Release —v0.4.4
  • fix: skip GDI handle clipboard formats on Windows to prevent crashes
  • Release —v0.4.3
  • fix: free X11 atom cache on exit and call XInitThreads for thread safety
  • Release —v0.4.2
  • fix: build releases with ReleaseSafe to eliminate debug allocator lea…
  • Release —v0.4.1
  • fix: pin glibc 2.31 for Linux builds to support Ubuntu 22.04+
  • Release —v0.4.0
  • feat: bump version to 0.4.0, update README with OSC 52 docs
  • fix: allow --osc52 flag in any position in write args
  • feat: add --osc52 to help text and shell completions
  • feat: add OSC 52 hint to NoDisplayServer error message
  • feat: wire up --osc52 flag and COPYCAT_OSC52 env var in write command
  • feat: add osc52 module with formatOsc52 and tests
  • Release —v0.3.1
  • feat: add --version/-V flag and version in help output
  • Release —v0.3.0
  • fix: remaining Zig 0.16 cross-platform build issues
  • fix: resolve Zig 0.16 build failures on Linux and Windows
  • feat: upgrade to Zig 0.16.0
  • Fix GitHub Sponsors username formatting
  • Release —v0.2.0
April 2026
  • Release —v0.1.1
  • Release —v0.1.0