Top 20 NuGet toolkit Packages

The goal of MahApps.Metro is to allow devs to quickly and easily cobble together a 'Modern' UI for their WPF apps (>= .Net 4.5), with minimal effort.
Microsoft Cognitive Toolkit Libraries, GPU Build
Xwt is a cross-platform UI toolkit for creating desktop applications with .NET and Mono that run on multiple platforms from the same codebase. Xwt works by exposing one unified API across all environments that is mapped to a set of native controls on each platform. The framework consists of the fr...
AjaxControlToolkit contains a rich set of controls that you can use to build highly responsive and interactive AJAX-enabled Web applications. AjaxControlToolkit contains more than 40 controls, including the AutoComplete, CollapsiblePanel, ColorPicker, MaskedEdit, Calendar, Accordion, and Watermark c...
Xamarin.Essentials: a kit of essential API's for your apps
An easy to use drag'n'drop framework for WPF applications.
Fluent.Ribbon is a library that implements an Office-like user interface for the Windows Presentation Foundation (WPF). It provides controls such as RibbonTabControl, Backstage, Gallery, QuickAccessToolbar, ScreenTip and so on.
Extended WPF Toolkit is the number one collection of WPF controls, components and utilities for creating next generation Windows applications. Provides 49 controls, all offered under the Microsoft Public License for maximum freedom. v3.4.0 provides 42 bug fixes and improvements. Documentation, sourc...
IconPacks for stylish awesome WPF and UWP applications.
Microsoft Cognitive Toolkit Libraries, CPU-Only Build
Fody add-in that provides custom interception. Supports Net45, NetStandard2.0 and UWP. Method, Property, Constructor and Field interceptors can be found in the package Cauldron.BasicInterceptors (https://www.nuget.org/packages/Cauldron.BasicInterceptors/)
A simple MVVM framework that heavily uses IL-weaving based on Fody.
Creating Windows Services is now a cake walk. This implementation can also handle localized service name and description.
Visual Studio dark theme for Cauldron WPF
Visual Studio dark theme for Cauldron WPF
Cauldron.Consoles is a Cauldron.Core based parameter parser which supports grouping of parameters in execution groups. It is also supports localization and has a nice parameter table :) Breaking changes in 3.1.x - See https://github.com/Capgemini/Cauldron for more information.
A simple localization implementation that can work with different sources. Breaking changes in 3.1.x - See https://github.com/Capgemini/Cauldron for more information.
Custom interceptors for Cauldron.Interception.Fody that provides method, property, field and constructor interception.
A Fody/Mono.Cecil wrapper that provides most basic IL code weaving helpers.
The activator is a simple and fast dependency injection framework. It is based on attributes and does not require any configuration files for configuration. It also supports using static methods as component constructor. This version is not compatible with Assemblies weaved by versions older t...