There was a download of ntangle 2.5 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. The most popular versions among ntangle users are 2.5 and 1.0. The program's installer file is generally known as NTANGLE.EXE. The software is included in Education Tools. This free software was originally developed by Ihsan.
From the developer:
Welcome to nTangle: Untangle a web of intersecting lines, from very easy to very hard. A simple and relaxing way to pass your time. The program features more than 20.000 puzzles for you to solve. You can track your progress and have statistics about your accomplishment..
You may want to check out more software, such as PerfectCuts Preview or TMA52 Nov 04, which might be similar to ntangle.