Ghostty, the free, non-profit terminal emulator, released version 1.4.0 on October 27 after seven months of work: 2,889 commits from 172 contributors. Highlights from the release notes:

• Memory: scrollback that isn't on screen is now compressed while the terminal is idle, cutting its physical memory use by 70-90% for typical text, so the default scrollback limit rose from 10 MB to 50 MB. Hidden tabs release GPU memory (about 385 MiB down to 18 MiB in one macOS test).
• Graphics: Ghostty now implements 100% of the Kitty graphics protocol, including animation, which the maintainers say makes it the first terminal other than Kitty to do so.
• Speed: the team found macOS caps each read from a pseudo-terminal at about 1 KiB and reworked how output is drained and parsed.
• Security: ten advisories are fixed, including paste protection that missed carriage returns and crafted Kitty graphics or hyperlinks that could, in some cases, read files or run commands. It also supports macOS 27.

On Hacker News, users compared it with Konsole, WezTerm and iTerm2, and a commenter from the project pointed to libghostty, the embeddable terminal core.