Logsift 1.0.0

The first release of Logsift: a fast, free desktop viewer for very large log files, for Windows, macOS and Linux.

What's in it

• Huge files, instantly. A 1 GB log shows its first lines in 0.12 s and is fully indexed in 0.26 s.
• Live tail. Follow growing logs, including through rotation and truncation. You choose whether changes load automatically or when you click Reload.
• Find All. Run several searches at once, each in its own color, and search within the results. Text, whole word, regex and any case are supported.
• Filters. Combine filters with AND, OR and NOT. Filter by level and time range, keep stack traces with their line, and add context lines.
• Timeline of errors and warnings, plus a highlight bar beside the scrollbar.
• Columns parsed automatically, and JSON logs with a pretty-printed details view.
• Folder search, including inside .gz and .zip files.
• Remote logs over SSH/SFTP, with a file browser. They stay up to date as the remote log grows.
• Top messages, compare two logs, and merge logs by time.
• Also: bookmarks, alerts, export, sessions, many encodings (including UTF-16, Windows code pages, Shift_JIS and GB18030), and dark mode.

Download

File	For
Logsift-1.0.0-windows-x64.zip / -windows-arm64.zip	Windows: unzip, run Logsift\Logsift.exe
Logsift-1.0.0-macos-arm64.dmg / -macos-x64.dmg	macOS: Apple Silicon / Intel
Logsift-1.0.0-linux-x64.deb	Debian / Ubuntu
Logsift-1.0.0-linux-x64.tar.gz / -linux-arm64.tar.gz	Other Linux: unpack, run Logsift/bin/Logsift
Logsift-1.0.0-any-java21.zip	Any OS with Java 21+ installed: run bin/logsift

The native downloads include their own Java runtime. They are not code-signed yet:

• macOS: if it says the app is damaged or can't be opened, run xattr -dr com.apple.quarantine /Applications/Logsift.app.
• Windows: if SmartScreen warns, choose More info → Run anyway.