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Top Apps

  • Trial SolarWinds Backup and you could receive a free Amazon Echo Dot Trial SolarWinds Backup and you could receive a free Amazon Echo Dot Icon
    SolarWinds Backup provides lightning-quick recovery that can restore business continuity after a disaster. For a limited time only, when you try SolarWinds Backup and store at least 100GB of selected data, you have the chance to receive a free Amazon Echo Dot.
  • Want to improve your MSP’s revenue? Price your services right. Want to improve your MSP’s revenue? Price your services right. Icon
    Want to improve your MSP’s revenue? Price your services right. Icon

    Get the ebook, The Managed Services Pricing Guide 2.0 to get industry best practices on pricing managed services.

    You choose software for your IT business so it makes you money. The margins must be good enough to justify the cost. SolarWinds® RMM was priced to give you the margins you need to earn a healthy amount of monthly recurring revenue. Download our all-new Managed Services Pricing Guide 2.0 to find what revenue to expect for your services, including light monitoring, web protection, patching management, backup and more.
  • Maxima -- GPL CAS based on DOE-MACSYMA Icon

    Maxima -- GPL CAS based on DOE-MACSYMA

    Computer Algebra System written in Common Lisp

    Maxima is a computer algebra system comparable to commercial systems like Mathematica and Maple. It emphasizes symbolic mathematical computation: algebra, trigonometry, calculus, and much more. For example, Maxima solves x^2-r*x-s^2-r*s=0 giving the symbolic results [x=r+s, x=-s]. Maxima can calculate with exact integers and fractions, native floating-point and high-precision big floats. Maxima has user-friendly front-ends, an on-line manual, plotting commands, and numerical libraries. Users can write programs in its native programming language, and many have contributed useful packages in a variety of areas over the decades. Maxima is GPL-licensed and largely written in Common Lisp. Executables can be downloaded for Windows, Mac, Linux, and Android; source code is also available. An active community maintains and extends the system. Maxima is widely used: annual direct downloads exceed 300,000. Many other users receive it through secondary distribution.

  • BRL-CAD Icon


    Open Source Solid Modeling CAD

    BRL-CAD is a powerful cross-platform constructive solid geometry solid modeling system that includes an interactive geometry editor, ray-tracing for rendering & geometric analyses, network distributed framebuffer support, image & signal-processing tools.

  • Scid vs. PC Icon

    Scid vs. PC

    Chess Database and Toolkit program

    "Shane's Chess Information Database" is a huge chess toolkit with extensive database, analysis and chess-playing features. Scid vs. PC is a usability and bug-fix fork of Scid. It has extensive interface fixes and improvements, and is fully compatible with Scid's .si4 databases. It's new features include a rewitten Gamelist, a Computer Tournament, and FICS, Tree and Book improvements.

  • GnuCOBOL (formerly OpenCOBOL) Icon

    GnuCOBOL (formerly OpenCOBOL)

    A free COBOL compiler

    GnuCOBOL (formerly OpenCOBOL) is a free COBOL compiler. cobc translates COBOL source to executable using intermediate C, designated C compiler and linker. OpenCOBOL 1.1 became GNU Cobol 1.1 in 2013. GnuCOBOL 2.2 is the latest, version 3.0 is on its way. A programmer's guide, by Gary Cutler and Vincent Coen, is indexed at together with more documentation. OpenCOBOL was written by Keisuke Nishida and Roger While, from 2001 to 2012. GnuCOBOL is also authored by Simon Sobisch, Ron Norman, Edward Hart, Sergey Kashyrin, Dave Pitts and Brian Tiffin. Others listed in the AUTHORS and THANKS files. Copyright 2001-2018 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the FSF; either version 3, or (at your option) any later version. The libcob run time support source tree is licensed LGPL.

  • KH Coder Icon

    KH Coder

    Quantitative Content Analysis or Text Mining

    KH Coder is a free software for quantitative content analysis or text data mining. It is also utilized for computational linguistics. You can analyze Japanese, English, French, German, Italian, Portuguese and Spanish text with KH Coder. Also, Catalan, Chinese (simplified), Korean, Russian and Slovenian language data can be analyzed with the latest alpha release (Version 3). KH Coder provides various kinds of search and statistical analysis functions using back-end tools such as Stanford POS Tagger, FreeLing, Snowball stemmer, MySQL and R.

  • Monitor Your Most Critical Cloud & SaaS Applications Monitor Your Most Critical Cloud & SaaS Applications Icon
    Monitor Your Most Critical Cloud & SaaS Applications Icon

    Get insights into the performance of applications and services such as AWS, Salesforce, Office 365 and WebEx.

    With a view into both web and network health, you'll be able to pinpoint the cause of an outage instantly, whether it's within your network, a provider's network or the SaaS application. Save time, track SLAs and clear tickets faster.
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  • XMLTV Icon


    XMLTV obtains and processes TV listings data

    XMLTV is a set of programs to process TV (tvguide) listings and help manage your TV viewing, storing listings in an XML-based format. There are utilities to download TV listings for many countries, filter programs and Perl libraries to process listings. Our code is now available on Github at and new issues should be reported at

  • PySolFC

    PySolFC (PySol Fan Club edition) is an extended version of PySol (a solitaire card games collection).

  • rattleCAD Icon


    A graphical tool to design a bicycle (s) geometry and derive drawings from its configuration


    Build Systems for WSJT Applications

    JTSDK is a pre-configured collection of open source cross platform development frameworks, Gnu tools, libraries and custom written scripts designed to ease compiling WSJT applications and documentation from source code. WINDOWS APPLICATIONS ---------------------------------------------------------------------- * JTSDK-QT.......: WSJT-X, WSPR-X and MAP65 * JTSDK-PY........: WSJT and WSPR * JTSDK-DOC....: All WSJT Documentation * JTSDK-MSYS..: General Compiling LINUX APPLICATIONS ------------------------------------------------------------------ * JTSDK-Nix.......: WSJT, WSJT-X and WSPR

  • PLplot

    Cross-platform, scientific graphics plotting library

    PLplot is a cross-platform, scientific graphics plotting library that supports math symbols and human languages (via UTF-8 user input strings); plot capabilities for multiple non-interactive plot file formats and in multiple interactive environments; and bindings for multiple computer languages.

  • Get your Apps to customers 5x faster with RAD Studio. Get your Apps to customers 5x faster with RAD Studio. Icon
    Get your Apps to customers 5x faster with RAD Studio. Icon

    The easiest and most powerful cross platform development tool available on the market. Start a free trial today (no credit card needed).

    RAD StudioTM: Build cross-platform apps ridiculously FAST!
    • Delivering fast and powerful native applications for Windows, Linux, macOS, iOS, Android, cloud and IoT.
    • Rapidly design, build, and run applications optimized for native performance, from a single code base across all platforms.
    • Securely connect and embed any data, on any tier, in the Enterprise, or cloud.
  • DreamStudio by Volocian Studios Icon

    DreamStudio by Volocian Studios

    Free yourself

    Volocian believes first and foremost that financial status shouldn’t be a barrier to entry in multimedia content creation. Whether you want to design a product or website, record a band, remix a song, or produce a feature length movie with professional post production graphics and effects, Volocian™ wants to help, even if you’re using borrowed hardware with no previous experience. We provide affordable products and services for any budget, including cost-free solutions for education and demo purposes, while everything we do is designed with ease of use and flexibility in mind, to suit everyone from novice hobbyists to expert professionals. Wherever possible, Volocian™ relies on free, open source, and cross-platform software to prevent vendor lock-in, planned obsolescence, and software as a service licensing. While we remain pragmatic about the use of proprietary software, as we’re aware of the feature limitations of some open source solutions, free solutions are preferred.

  • Ayam Icon


    Ayam is a free 3D modelling environment for the RenderMan interface.

    Downloads: 357 This Week Last Update: See Project
  • tkImg

    The "Img" package adds a lot of image formats to Tcl/Tk.

  • tkPacman Icon


    A GUI for the 'pacman' package manager of Arch Linux

    tkPacman is a lightweight graphical user interface for 'pacman', the package manager of Arch Linux. It is built with Tcl/Tk. As such it is compatible with all window managers and desktop environments. It only interacts with the package database via the CLI of 'pacman'. So, installing and removing packages with tkPacman or with pacman leads to exactly the same result. tkPacman is started using your normal (unprivileged) user account. You can browse through available and installed packages as a normal user. Anytime, you perform an action that requires 'root' privileges, you are asked to authenticate. tkPacman can use 'su', 'sudo', 'gksu' or 'kdesu'.

    Downloads: 259 This Week Last Update: See Project
  • [incr Tcl]

    [incr Tcl] is the most widely used O-O system for Tcl. The name is a play on C++, and [incr Tcl] provides a similar object model, including multiple inheritence and public and private classes and variables. Repos now and itk

  • Scidb Icon


    Chess Database Application

    Scidb is an open-source chess database application for Windows, Unix/Linux. It is a new development inspired by Scid.

  • AudeLA Icon


    AudeLA is a TCL extension aimed at providing amateur astronomers with image processing, telescope controling, ccd camera driving, and various astronomical algorithms.

    Downloads: 99 This Week Last Update: See Project
  • kitgen build system

    Framework to generate TclkitLite executables, compile Tcl packages and build kit files for different operating systems

  • The Emu Speech Database System Icon

    The Emu Speech Database System

    EMU is a collection of software tools for the creation, manipulation and analysis of speech databases. At the core of EMU is a database search engine which allows queries based on the sequential and hierarchical structure of the annotations.

  • SaVi satellite constellation visualizer Icon

    SaVi satellite constellation visualizer

    Earth orbits and coverage display in 3D on your laptop.

    SaVi - simulate Iridium, Globalstar, O3b, Sirius Radio, GPS, Galileo and other satellite constellations, modify them, or design your own. Uses Tcl/Tk and Unix libraries; 3D viewing option requires Geomview running on X Window.

  • The simplest manual counter Icon

    The simplest manual counter

    This totally open source manual counter offers the easiest way to count numerous items in a very short time. After associating a keypad to each item, typing it increments its associated counter. Such a project is so simple a child could use it!

  • YouTube-DL-PyTK Icon


    YouTube Downloader - Cross Platform

    YouTube-DL-PyTK (formerly known as YouTube-DL-GTK) is just a graphical launcher for the popular youtube downloader youtube-dl . Its purpose is simple; to facilitate the downloading of non-copyright-protected videos from certain internet websites including YouTube. It is written in Python, so it should run on Windows and Linux systems alike. I don't have access to an Apple computer to test it on OSX, but it might also work on that platform. It includes the Windows and Unix version of youtube-dl, so there's no need for you to go download it yourself for this to work. This little project packages everything you need to start using it in one package, and all the appropriate licensing information is located in the archive. If you have ran the installer on Windows, you can find the source code and all of the documentation in the installation folder.

    Downloads: 32 This Week Last Update: See Project
  • Naraeon Secure Erase Icon

    Naraeon Secure Erase

    Naraeon Secure Erase is Secure Erase environment for SATA/NVMe SSDs.

    Naraeon Secure Erase is Secure Erase environment for SATA/NVMe SSDs. Using NVIDIA VGAs and having trouble? see

    Downloads: 30 This Week Last Update: See Project
  • VecText

    Converting text to a structured representation

    VecText is an application that converts raw text to a structured format suitable for various data mining software. The application is written in the interpreted programming language Perl. A part of the functionality is realized by external modules (Lingua::Stem::Snowball for stemming). Graphical user interface enables user friendly software employment without requiring specialized technical skills and knowledge of a particular programming language, names of libraries and their functions, etc. All preprocessing actions are specified using common graphical elements organized into logically related blocks. . The graphical user interface is implemented in Perl/Tk. In the command line interface mode, all options need to be specified using the command line parameters. This way of non-interactive communication enables incorporating the application into a more complicated data mining process integrating several software packages or performing multiple conversions in a batch.

    Downloads: 29 This Week Last Update: See Project
  • un-applet

    A simple software update notifier for debian based systems

    A simple, light-weight, desktop-independent update notification applet for the system tray on apt based systems as Debian, Ubuntu or Linux Mint. A cron job runs in the background and periodically checks for pending software updates, the applet informs you by its color about the state of your system. Through its menu you can view the list of pending updates, check for updates and install these. The main goal of un-applet is to provide an easy way to help users to keep their system up to date without getting in the user's way while keeping software dependencies at a minimum.

    Downloads: 24 This Week Last Update: See Project
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