TeraCopy 4.0 Arrives After Nine Years — Now Receives Files via LocalSend

TeraCopy 4.0 Arrives After Nine Years — Now Receives Files via LocalSend

Code Sector’s long-awaited major version brings a new multi-threaded engine, a modernised interface, and the ability to accept wireless transfers from any LocalSend-compatible device.

Code Sector released TeraCopy 4.0 on June 20, 2026 — the first major version number jump since v3.0 appeared in February 2017, a gap of roughly nine years.

TeraCopy has long been a go-to tool for Windows users who need more control over file transfers than the operating system’s built-in copy dialog provides. The utility dynamically adjusts memory buffers to minimise disk seek time, uses asynchronous copying to accelerate transfers between two physical drives, and handles errors gracefully by skipping problem files rather than halting the entire operation. Shell integration lets users invoke it simply by dragging and dropping files in Windows Explorer.

What’s new in v4.0

The headline addition is support for receiving files via the LocalSend protocol. LocalSend is a widely used open-source solution for sharing files across a local network — over Wi-Fi, for example — without routing data through a cloud service. It runs on Windows, macOS, Linux, iOS, Android, and the web.

Rather than relying on LocalSend’s own Windows client, TeraCopy implements the reception logic internally. The result is a more flexible experience for handling incoming transfers: users can choose to skip, overwrite, or rename a file when a name conflict arises — the original app always creates a duplicate — and can remove unwanted files from the transfer queue before accepting it. Code Sector also reports significantly better throughput on fast networks.

Beyond LocalSend, version 4.0 consolidates improvements that have accumulated across the v4 beta and release-candidate builds. These include a new multi-threaded copy engine (replacing the earlier asynchronous-copy approach and delivering better performance on SSDs and network paths), support for copying to multiple targets simultaneously, a queue system for managing several operations in sequence, a modern Windows Explorer context-menu entry, and an integrated toolbar in the title bar.

Core capabilities

• Dynamically adjusted buffers that reduce hard-drive seek time during large transfers.
• New multi-threaded engine: one thread reads and checksums each block; a second thread writes, keeping memory buffers continuously filled.
• Error recovery: failed files are skipped rather than aborting the job; problem files can be recopied selectively afterwards.
• File-integrity verification using 17 checksum algorithms including CRC32, MD5, SHA-1, BLAKE3, and xxHash3.
• Interactive file list that doubles as a log, showing per-file size, source and destination checksums, and any errors encountered.
• Queue management: multiple copy jobs run in sequence, with all tasks and their lists retained for several days for review.
• LocalSend reception with conflict resolution and pre-acceptance filtering — not available in the standard LocalSend client.

Platform and licensing

TeraCopy 4.0 is available now as a free download from codesector.com. Users upgrading from v3.x will find that their copy history is imported automatically on first launch.