Multiwfn 3.8 Download [repack] -

8 , a powerful and free open-source wavefunction analyzer used in quantum chemistry. 🚀 Multiwfn 3.8 Now Available: Enhanced Wavefunction Analysis The formal version of Multiwfn 3.8 has been released. This update introduces significant performance improvements and several new analysis functions for researchers and students in the field of computational chemistry. 📦 Download Links You can download the latest binaries and source code directly from the official Multiwfn Download Page . Windows: Download Win64 Binary (Recommended for stability and ease of use). Linux: Download Linux Binary. macOS: Available via Homebrew or manual compilation. ✨ Key New Features in 3.8

user wants a long article about downloading Multiwfn 3.8. I need to provide a comprehensive guide covering features, installation, usage, and download sources. I'll follow the search plan to gather the necessary information. search results have provided some initial links. I'll open the most relevant ones to gather detailed information for the article. information gathered so far covers download sources, installation, features, and citation details. I still need more information on advanced usage scenarios, integration with other software, system requirements, and troubleshooting. I'll search for these topics. have gathered information on various aspects of Multiwfn 3.8, including download sources, installation procedures, features, usage, integration, system requirements, and troubleshooting. I will now structure the article to cover these topics comprehensively, starting with an introduction, followed by sections on download, new features, installation, usage, integration, advanced scenarios, system requirements, troubleshooting, and citation. I'll cite the sources appropriately. Comprehensive Guide to Multiwfn 3.8: Download, Installation, Features, and Usage For computational chemists and researchers in theoretical chemistry, few tools are as indispensable as Multiwfn. Developed by Tian Lu at the Beijing Kein Research Center for Natural Sciences, Multiwfn has evolved into one of the most powerful, user-friendly, and versatile wavefunction analysis programs available today. With the release of Multiwfn 3.8 in January 2026, the software has taken a significant leap forward, introducing new features, performance improvements, and an updated versioning scheme that makes tracking updates more intuitive than ever. This article provides a comprehensive guide to Multiwfn 3.8, covering everything from download and installation to key features, usage examples, troubleshooting, and proper citation. Whether you're a seasoned user or new to the field, this guide will help you make the most of this remarkable program.

What is Multiwfn? Multiwfn—short for "Multifunctional Wavefunction Analyzer"—is a free, open-source, high-efficiency program for performing a wide range of wavefunction analyses in quantum chemistry. Since its initial release on November 27, 2009, it has become a cornerstone of computational chemistry research, supporting nearly all essential wavefunction analysis methods. The program can analyze electronic wavefunctions from a wide variety of quantum chemistry packages, including Gaussian, ORCA, GAMESS-US, NWChem, Q-Chem, Turbomole, Molpro, Molcas, CFour, PSI4, MRCC, CP2K, and many others. This broad compatibility makes Multiwfn a universal analysis hub that accepts outputs from virtually any major quantum chemistry software and provides unified interfaces for wavefunction analysis, excited-state characterization, and molecular property calculation. The core capabilities of Multiwfn include calculating and visualizing real-space functions (such as electrostatic potential and electron density), analyzing charge distribution and chemical bonding, studying electron localization and delocalization, evaluating aromaticity, investigating intramolecular and intermolecular interactions, analyzing electronic excitations, and computing response properties.

Downloading Multiwfn 3.8 The official and only recommended source for downloading Multiwfn is its dedicated website: http://sobereva.com/multiwfn . All binary packages, source code, and documentation are available for free download from the Download page at http://sobereva.com/multiwfn/download.html. Available Versions Multiwfn is available for multiple platforms: | Platform | Version Type | Package Name Format | |----------|-------------|---------------------| | Windows 64-bit | GUI version | Multiwfn_3.8_bin_Win64.rar | | Linux | Full version | Multiwfn_3.8_bin_Linux.zip | | Linux | noGUI version | Multiwfn_3.8_bin_Linux_noGUI.zip | | macOS | Via CrossOver or Homebrew | Special instructions required | | Source code | Compilation required | Multiwfn_3.8_src.zip | The Windows version is highly recommended for new users, as it is the most stable version, offers the best graphical user interface (GUI), and requires no system setup. Direct Download Links For Linux users, the noGUI version can be downloaded directly using wget: wget http://sobereva.com/multiwfn/misc/Multiwfn_3.8_bin_Linux_noGUI.zip unzip Multiwfn_3.8_bin_Linux_noGUI.zip multiwfn 3.8 download

The full version with GUI support is available at: http://sobereva.com/multiwfn/download.html About Version Naming Multiwfn 3.8 was officially released on January 7, 2026. Prior to the official release, development versions were frequently updated on the official website, with updates sometimes occurring multiple times per day. Important change: Going forward, Multiwfn will adopt a date-based versioning system. Instead of accumulating development versions into a formal release, future versions will be named directly by their release date (e.g., Multiwfn 2026.1.12). This new naming scheme makes it easier to distinguish between versions and eliminates the ambiguity of development version date references. The version 3.8 will be the last to follow the old naming convention.

What's New in Multiwfn 3.8 Multiwfn 3.8 represents a massive update built upon over five years of active development since the previous 3.7 release. The development branch alone accumulated hundreds of updates before the official release. Key New Features Enhanced Charge Fitting Options Option 8 has been added to the CHELPG and MK charge fitting interfaces. When switched to "Yes," additional constraints are applied so that the fitted atomic charges exactly reproduce the electric dipole moment calculated from the wavefunction. Grid Data Translation Subfunction 19 was added to the grid data processing function (main function 13). This feature translates grid data along different axes by specified distances, allowing interesting regions to be approximately centered in the box for easier inspection. High-Level Wavefunction Support Multiwfn 3.8 can now analyze wavefunctions from very high electronic structure methods such as CCSD(T), CCSDT, and MP5 generated by the AUTOCI module based on JSON files from ORCA 6.1. Electron Density Polarization Analysis Subfunction 17 of main function 18 implements electron density polarization analysis based on electron excitations (originally proposed in J. Phys. Chem. A, 124, 633, 2020). This provides valuable insight into electron density polarization under external perturbations such as point charges and can be used to study substitution effects, electrophilic/nucleophilic reaction mechanisms, and atomic polarizability. Improved IGM (mIGM) Analysis The modified IGM (mIGM) recently proposed by Tian Lu has been fully supported in Multiwfn 3.8. Extrema Detection on Contour Lines Option 19 has been added to the post-processing menu of main function 4. This option enables the display of extrema (maxima and minima) of a function on a contour line. For example, positions of maxima and minima of electrostatic potential can now be highlighted on a contour line of electron density. Bond Dual Descriptor A new method for predicting nucleophilicity and electrophilicity of chemical bonds, based on the bond dual descriptor proposed in J. Math. Chem., 63, 1588 (2025), has been implemented. See Section 3.25.1 of the manual for an introduction and Section 4.22.5 for calculation examples. Supercell Grid Data Duplication Subfunction 20 in main function 13 duplicates grid data along the 1st, 2nd, or 3rd box vector by specified times, with the option to duplicate atoms simultaneously. If the box information of the grid data exactly matches the cell information of a crystal, users can obtain grid data and structures corresponding to supercells via this function. For a complete list of all new functions, improvements, changes, and bug fixes in version 3.8, refer to the Update History page on the official website.

Installation Guide Linux Installation Installing Multiwfn on Linux is straightforward. Two versions are available: the full version (which requires the motif library) and the noGUI version (which does not require motif, making it ideal for supercomputers and servers where users lack root access). Installing the Full Version with GUI Support 8 , a powerful and free open-source wavefunction

Install the motif library (requires root or sudo access):

For Redhat-based systems (RHEL, CentOS, Rocky Linux, Fedora): yum install motif

For Ubuntu/Debian systems: sudo apt-get install libxm4 libgl1 📦 Download Links You can download the latest

Alternatively, download motif from https://motif.ics.com/motif/downloads

Download and extract Multiwfn : wget http://sobereva.com/multiwfn/download.html # Or directly download the package unzip Multiwfn_3.8_bin_Linux.zip