Ninite!

Chocolatey NuGet is a Machine Package Manager, somewhat like apt-get, but built with Windows in mind. It is built on top of NuGet command line and the NuGet infrastructure.In terms of updates, it allows you to update nearly everything on your machine with a few simple keystrokes.

Patch My PC is a small portable application that updates third party applications and Windows updates. It’s critical to keep software up to date to ensure vulnerabilities are patched. There are currently almost 100 third-party applications that Patch My PC can silently update, and the list is growing with each release!

Ketarin is a small application which automatically updates and optionally installs setup packages by monitoring web pages for changes. As opposed to other tools, Ketarin is not meant to keep your system up-to-date (like a package manager), but rather to maintain a compilation of all important setup packages which can then be burned to disc or put on a USB stick.

Mevvy is an app discovery platform that follows a different concept - we categorize apps by interest group, and help you discover the apps that truly matter to you - whether you are a parent, a pilot, a marketing strategist or an athlete!

Npackd (pronounced "unpacked") is an application store/package manager/marketplace for applications for Windows. It helps you to find and install software, keep your system up-to-date and uninstall it if no longer necessary.

The best alternative to Ninite for Mac. Get multiple apps silently. Just choose what apps to install and get apps installed automatically, fast and easy.

A command-line installer for Windows.

App Grid is a new lightweight Ubuntu Software Center alternative that tries to make application discovery easier by using a grid view which includes app screenshots and ratings.

OneGet is a unified interface to package management systems and aims to make Software Discovery, Installation and Inventory (SDII) work via a common set of cmdlets (and eventually a set of APIs). Regardless of the installation technology underneath, users can use these common cmdlets to install/uninstall packages, add/remove/query package repositories, and query a system for the software installed. Included in this CTP is a prototype implementation of a Chocolatey -compatible package manager that can install existing Chocolatey packages. »

Ubuntu Sources List Generator is a website where you can generate a sources.list file with a lot of useful repositories.

WAPT is a package manager for Windows which provides installation, removal and upgrades of software in managed environment. Software can be deployed through a central management console. WAPT was modeled on GNU/Linux Debian APT, hence its name.

PDQ Deploy - Deploy Software and Patches Quickly

The Debgen is a tool that allows the user to create /apt/sources.list file by adding some extra repositories beyond the standards.