TekuTeku File Merge combines several files into one, byte for byte, in the order you choose. Nothing is decoded, re-encoded or converted, so CSV files, logs, text in any character encoding and split binary files (.001, .002, ...) come out unchanged.

- Add files and folders by drag and drop, with name filters and subfolders
- Reorder by dragging, or sort by name, date, size or path
- Optional: add CRLF to files that do not end with a line break; remove the BOM from files after the first
- No network access, no telemetry, no account
- 21 languages, light and dark themes
- Installer, portable single .exe (.NET included) or Microsoft Store: https://apps.microsoft.com/detail/9MSSHDP4MJZK

Free and open source (MIT). Windows 10 (1809+) / 11, x64 and ARM64.

Features

  • Byte-for-byte merge: nothing is decoded or converted
  • Works with text, CSV, logs and split binary files
  • Drag and drop files and folders, with name filters and subfolders
  • Reorder by dragging, or sort by name, date, size or path
  • No network access, no telemetry, no account
  • 21 languages, light and dark themes

Project Samples

Project Activity

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License

MIT License

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Additional Project Details

Operating Systems

Windows

Languages

English, Japanese

Intended Audience

End Users/Desktop

User Interface

Win32 (MS Windows)

Programming Language

C#

Registered

2026-09-25