BigText

BigText is a free, open-source desktop text editor designed to open, search, analyze, and edit extremely large files, from gigabytes to 50 GB and beyond, without loading the entire file into RAM.

Built with Rust, BigText runs on Windows, Linux, and macOS. It uses memory-mapped file windows, streaming I/O, and background indexing to keep the interface responsive when working with huge log files, CSV exports, JSON data, SQL dumps, and other text-based files.

Key features:

• Huge file support: Open and edit multi-gigabyte files while keeping memory usage low.
• Fast search: Search large files using plain text or regular expressions, with Find All, filtering, and batch replacement.
• Advanced text editing: Undo and redo, multiple cursors, column editing, line sorting, and duplicate removal.
• Log analysis: Real-time log following, severity filtering, timestamp navigation, time histograms, and log merging.
• CSV and TSV tools: View large datasets as tables, sort and filter columns, calculate statistics, and perform joins.
• JSON tools: Structured JSON viewing, folding, JSON Lines queries, and format conversion.
• File comparison: Compare large files using a streaming diff engine.
• Hex viewer: Inspect binary files and large file contents in hexadecimal format.
• Compressed files: Open compressed logs and archives, including GZIP, Zstandard, ZIP, and TAR.
• Safe saving: Atomic file replacement, optional backups, and crash recovery.
• Command-line tools: Automate text processing and log filtering with bigtext-cli.

BigText is distributed under the MIT license and is free for both personal and commercial use. It offers native desktop downloads and portable options, with no account or telemetry required.