# syncspirit v0.4.3 release!

**URL:** https://forum.syncthing.net/t/syncspirit-v0-4-3-release/25404
**Category:** General
**Created:** [October 4, 2025, 1:21pm UTC](https://forum.syncthing.net/t/syncspirit-v0-4-3-release/25404 "2025-10-04T13:21:31Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![basiliscos](https://forum.syncthing.net/user_avatar/forum.syncthing.net/basiliscos/32/9080_2.png) [@basiliscos](https://forum.syncthing.net/u/basiliscos)
#### Post date: [October 4, 2025, 1:21pm UTC](https://forum.syncthing.net/t/syncspirit-v0-4-3-release/25404/1 "2025-10-04T13:21:31Z")

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I’m glad to announce v0.4.3 [release](https://github.com/basiliscos/syncspirit/releases/tag/v0.4.3)!

[Syncspirit](https://github.com/basiliscos/syncspirit/) is independent [BEP](https://docs.syncthing.net/specs/bep-v1.html) protocol implementation. Like [syncthing](https://syncthing.net) is continuous peer-to-peer file synchronization tool.

[![](https://raw.githubusercontent.com/basiliscos/syncspirit/refs/heads/master/docs/fltk-overview.gif) ](https://raw.githubusercontent.com/basiliscos/syncspirit/refs/heads/master/docs/fltk-overview.gif)

You can download ready-to-use binaries for [Linux x86\_64](https://github.com/basiliscos/syncspirit/releases/download/v0.4.3/syncspirit-fltk-v0.4.3-x86_64.AppImage) (AppImage), [Windows 32 bit](https://github.com/basiliscos/syncspirit/releases/download/v0.4.3/syncspirit-win32-v0.4.3.zip) (WindowsXP is supported), [Windows 64 bit](https://github.com/basiliscos/syncspirit/releases/download/v0.4.3/syncspirit-win64-v0.4.3.zip) and [Mac OS X](https://github.com/basiliscos/syncspirit/releases/download/v0.4.3/syncspirit-fltk-v0.4.3-darwin-arm64.zip) (Apple silicon).

Notable changes:

- [core] fix compatibility with syncthing v2.0 (i.e. tolerate directory with non-zero size and without blocks)
- [core] allow to specify root certificate authority to use in all tls/ssl connections, see faq, mostly actual for Windows XP with expired system certificates
- [core] allow to load huge databses and interrupt loading porgress
- [core] reduce memory consumption by model (~ 44%)
- [core] use in-depth scan order instead of in-breadth
- [core, win32] fix negative serial number in generated ssl-certificates
- [core, fltk] more correctly display file scanning progress
- [core, bugfix] make successful upnp port unmapping upon shutdown
- [fltk] deactivate currently selected log level button

[Syncspirit](https://github.com/basiliscos/syncspirit/) is a syncthing-compatible is written from the scratch software in C++ as classical desktop application.

Syncspirt [source code](https://github.com/basiliscos/syncspirit/archive/refs/tags/v0.4.3.tar.gz) uses GPLv3 license.

Any feedback is welcome!

WBR, basiliscos.