Source Insight Downloads

This is the place to download the latest Source Insight updates, as well as sample macros, and custom language plug-ins.

Free point-releases are made from time to time to fix bugs and add features. In order to use the updates, you must have a valid Source Insight serial number, or run it in Trial mode.

The updates contain a full installation of Source Insight. They are not patch files, so you do not need to have Source Insight installed on your machine already.

Source Insight 4 - Latest Version

Version 4.0.0150 - February 6, 2026

This requires a valid version 4.x license, OR you can run this in Trial mode for up to 30 days.

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New: Custom Commands: A new meta-character %L was added for the last line number in the current selection. You can use %l (lower-case L) to get the first line number in the selection.

New: The Symbol window pane on the left has new commands on the right-click menu: Collapse All and Expand All.

New: The Symbol window pane has new options: Nest namespace contents: The outline contents within namespaces are nested and indented (as was the default). If you de-select this option then namespace contents are not indented. Start collapsed: The outline contents appears fully collapsed when a file is first opened. 

Fix: C++/C#: Capture variables in a lambda expression or function were not recognized within the lambda body.

Fix: Scrolling was not working when using a touch screen swipe.

Source Insight 3.5 - Latest Version

Version 3.5.0086 - October 17, 2019

This requires a valid version 3.x license.

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Version 3.50.0086 - October 17, 2019

Small changes to dialog font handling, and edit text control for compatibility. 

Updated code signing certificate.

Version 3.50.0083 - June 7, 2016

Fix: Macro functions GetSymbolLocation and GetSymbolLocationEx were failing to find project files when the given symbol parameter was the name of a file.

Version 3.50.0082 - March 11, 2016

Fix: Display bugs fixed for Windows 10, high DPI displays, and using Windows magnification greater than 100%. In particular, resizing or moving docked windows did not draw correctly in those situations.

Fix: C/C++ #include statements: The Jump To Definition command would not open the file in the include statement if the file was in a subdirectory. For example: #include "subdirheader.h". Now the path in the include statement is evaluated relative to the project source root directory.

Fix: Relation window was not showing function call trees correctly for Visual Basic and Basic.

Fix: Replace command: the "Whole File" option setting is now preserved after pressing the Replace button.

Download Custom Language Files

Custom Language files add syntax formatting and some parsing support to Source Insight for languages that are not built-in.

This is a directory of custom language files which you can download and import into Source Insight.

Download Sample Macro Files

This is a directory of macro files which you can download and add to your projects.