NS

NSIS

NSIS (Nullsoft Scriptable Install System) is a professional open source system to create Windows installers. It is designed to be small, flexible, and customizable via scripting, enabling creation of efficient installers with complex logic and minimal overhead.
Latest: 3.12
Last checked: Feb 28, 2026 10:42am
Rank: 2042/15140
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Overview

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License: Open source (primarily zlib license)Installer: Script-based installer systemWinget: Available

Version & Lifecycle

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Current: 3.12 N-2: 3.10 Avg cadence: Every 214 days

Top Contributors

Top sitewide contributors:

  1. Anbarasan
  2. nico_k
  3. Bob
  4. Vigneshwaran

Community Notes

Deployment tip • May 19, 2026
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NSIS update validation and official source note

For managed NSIS updates, close NSIS tools such as the compiler GUI before rerunning the installer. A stale running copy can leave the installed binaries unchanged even when the installer process exits successfully, so validate the post-update file version or run makensis /VERSION after deployment instead of relying only on the process return code.

Keep package sourcing tied to the official NSIS project download page and record the exact installer version/date used. NSIS is also an installer-authoring tool, so do not confuse silent switches used by installers built with NSIS with the operational validation needed for updating the NSIS authoring application itself.

Sources: official NSIS downloads and official NSIS documentation.

Release Notes & Updates

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Avg cadence:
Updates • 0

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NSIS

Packaging Notes

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NSIS uses script files (.nsi) compiled into executable installers; supports Unicode and complex installation logic

Notes

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Widely used alternative to commercial installer systems; used by companies like Amazon, Dropbox, Ubisoft; supports Unicode installers and extensive customization.