System.Collections 4.3.0
Provides classes that define generic collections, which allow developers to create strongly typed collections that provide better type safety and performance than non-generic strongly typed collections.
Commonly Used Types:
System.Collections.Generic.List<T>
System.Collections.Generic.Dictionary<TKey, TValue>
System.Collections.Generic.Queue<T>
System.Collections.Generic.Stack<T>
System.Collections.Generic.HashSet<T>
System.Collections.Generic.LinkedList<T>
System.Collections.Generic.EqualityComparer<T>
System.Collections.Generic.Comparer<T>
System.Collections.Generic.SortedDictionary<TKey, TValue>
 
When using NuGet 3.x this package requires at least version 3.4.
                    Showing the top 20 packages that depend on System.Collections.
| Packages | Downloads | 
|---|---|
| 
                                                    Dapper
                                                     A high performance Micro-ORM supporting SQL Server, MySQL, Sqlite, SqlCE, Firebird etc.. 
                                                 | 
                                                17 | 
| 
                                                    Microsoft.DotNet.PlatformAbstractions
                                                     Abstractions for making code that uses file system and environment testable. 
                                                 | 
                                                7 | 
| 
                                                    NETStandard.Library
                                                     A set of standard .NET APIs that are prescribed to be used and supported together. This includes all of the APIs in the NETStandard.Platform package plus additional libraries that are core to .NET but built on top of NETStandard.Platform. 
When using NuGet 3.x this package requires at least version 3.4. 
                                                 | 
                                                8 | 
| 
                                                    Remotion.Linq
                                                     re-linq Frontend: A foundation for parsing LINQ expression trees and generating queries in SQL or other languages.
Key features:
- Transforms expression trees into abstract syntax trees resemblying LINQ query expressions (from ... select syntax)
- Simplifies many aspects of this tree (sub queries, transparent identifieres, pre-evaluation ...)
- Provides basic infrastructure for backend development (e.g. SQL generation) 
- Provides a framework for user-defined query extensions and transformations 
                                                 | 
                                                13 | 
| 
                                                    System.AppContext
                                                     Provides the System.AppContext class, which allows access to the BaseDirectory property and other application specific data.
Commonly Used Types:
System.AppContext
 
When using NuGet 3.x this package requires at least version 3.4. 
                                                 | 
                                                8 | 
| 
                                                    System.Collections.Concurrent
                                                     Provides several thread-safe collection classes that should be used in place of the corresponding types in the System.Collections.NonGeneric and System.Collections packages whenever multiple threads are accessing the collection concurrently.
Commonly Used Types:
System.Collections.Concurrent.ConcurrentDictionary<TKey, TValue>
System.Collections.Concurrent.ConcurrentQueue<T>
System.Collections.Concurrent.ConcurrentBag<T>
System.Collections.Concurrent.BlockingCollection<T>
System.Collections.Concurrent.ConcurrentStack<T>
 
When using NuGet 3.x this package requires at least version 3.4. 
                                                 | 
                                                9 | 
| 
                                                    System.ComponentModel.TypeConverter
                                                     Provides the System.ComponentModel.TypeConverter class, which represents a unified way of converting types of values to other types.
Commonly Used Types:
System.ComponentModel.TypeConverter
System.ComponentModel.TypeConverterAttribute
System.ComponentModel.PropertyDescriptor
System.ComponentModel.StringConverter
System.ComponentModel.ITypeDescriptorContext
System.ComponentModel.EnumConverter
System.ComponentModel.TypeDescriptor
System.ComponentModel.Int32Converter
System.ComponentModel.BooleanConverter
System.ComponentModel.DoubleConverter
 
When using NuGet 3.x this package requires at least version 3.4. 
                                                 | 
                                                14 | 
| 
                                                    System.Dynamic.Runtime
                                                     Provides classes and interfaces that support the Dynamic Language Runtime (DLR).
Commonly Used Types:
System.Runtime.CompilerServices.CallSite
System.Runtime.CompilerServices.CallSite<T>
System.Dynamic.IDynamicMetaObjectProvider
System.Dynamic.DynamicMetaObject
System.Dynamic.SetMemberBinder
System.Dynamic.GetMemberBinder
System.Dynamic.ExpandoObject
System.Dynamic.DynamicObject
System.Runtime.CompilerServices.CallSiteBinder
System.Runtime.CompilerServices.ConditionalWeakTable<TKey, TValue>
 
When using NuGet 3.x this package requires at least version 3.4. 
                                                 | 
                                                11 | 
| 
                                                    System.Linq.Expressions
                                                     Provides classes, interfaces and enumerations that enable language-level code expressions to be represented as objects in the form of expression trees.
Commonly Used Types:
System.Linq.IQueryable<T>
System.Linq.IQueryable
System.Linq.Expressions.Expression<TDelegate>
System.Linq.Expressions.Expression
System.Linq.Expressions.ExpressionVisitor
 
When using NuGet 3.x this package requires at least version 3.4. 
                                                 | 
                                                8 | 
| 
                                                    System.Linq.Queryable
                                                     Provides classes for querying data structures that implement IQueryable<T>.
Commonly Used Types:
System.Linq.Queryable
System.Linq.EnumerableQuery<T>
System.Linq.EnumerableQuery
 
When using NuGet 3.x this package requires at least version 3.4. 
                                                 | 
                                                7 | 
| 
                                                    System.Linq.Queryable
                                                     Provides classes for querying data structures that implement IQueryable<T>.
Commonly Used Types:
System.Linq.Queryable
System.Linq.EnumerableQuery<T>
System.Linq.EnumerableQuery
 
When using NuGet 3.x this package requires at least version 3.4. 
                                                 | 
                                                11 | 
| 
                                                    System.Net.Http
                                                     Provides a programming interface for modern HTTP applications, including HTTP client components that allow applications to consume web services over HTTP and HTTP components that can be used by both clients and servers for parsing HTTP headers.
Commonly Used Types:
System.Net.Http.HttpResponseMessage
System.Net.Http.DelegatingHandler
System.Net.Http.HttpRequestException
System.Net.Http.HttpClient
System.Net.Http.MultipartContent
System.Net.Http.Headers.HttpContentHeaders
System.Net.Http.HttpClientHandler
System.Net.Http.StreamContent
System.Net.Http.FormUrlEncodedContent
System.Net.Http.HttpMessageHandler
 
When using NuGet 3.x this package requires at least version 3.4. 
                                                 | 
                                                8 | 
| 
                                                    System.Security.Cryptography.Encoding
                                                     Provides types for representing Abstract Syntax Notation One (ASN.1)-encoded data.
Commonly Used Types:
System.Security.Cryptography.AsnEncodedData
System.Security.Cryptography.Oid
System.Security.Cryptography.OidCollection
 
When using NuGet 3.x this package requires at least version 3.4. 
                                                 | 
                                                8 | 
| 
                                                    System.Security.Cryptography.X509Certificates
                                                     Provides types for reading, exporting and verifying Authenticode X.509 v3 certificates. These certificates are signed with a private key that uniquely and positively identifies the holder of the certificate.
Commonly Used Types:
System.Security.Cryptography.X509Certificates.X509Certificate2
System.Security.Cryptography.X509Certificates.X509Certificate
System.Security.Cryptography.X509Certificates.X509ContentType
System.Security.Cryptography.X509Certificates.StoreLocation
System.Security.Cryptography.X509Certificates.StoreName
System.Security.Cryptography.X509Certificates.X509FindType
System.Security.Cryptography.X509Certificates.X509ChainStatus
System.Security.Cryptography.X509Certificates.X509Certificate2Collection
System.Security.Cryptography.X509Certificates.X509EnhancedKeyUsageExtension
System.Security.Cryptography.X509Certificates.X509Chain
 
When using NuGet 3.x this package requires at least version 3.4. 
                                                 | 
                                                8 | 
| 
                                                    System.Text.RegularExpressions
                                                     Provides the System.Text.RegularExpressions.Regex class, an implementation of a regular expression engine.
Commonly Used Types:
System.Text.RegularExpressions.Regex
System.Text.RegularExpressions.RegexOptions
System.Text.RegularExpressions.Match
System.Text.RegularExpressions.Group
System.Text.RegularExpressions.Capture
System.Text.RegularExpressions.MatchEvaluator
 
When using NuGet 3.x this package requires at least version 3.4. 
                                                 | 
                                                10 | 
| 
                                                    System.Xml.XDocument
                                                     Provides the classes for Language-Integrated Query (LINQ) to Extensible Markup Language (XML). LINQ to XML is an in-memory XML programming interface that enables you to modify XML documents efficiently and easily.
Commonly Used Types:
System.Xml.Linq.XElement
System.Xml.Linq.XAttribute
System.Xml.Linq.XDocument
System.Xml.Linq.XText
System.Xml.Linq.XNode
System.Xml.Linq.XContainer
System.Xml.Linq.XComment
System.Xml.Linq.XObject
System.Xml.Linq.XProcessingInstruction
System.Xml.Linq.XDocumentType
 
When using NuGet 3.x this package requires at least version 3.4. 
                                                 | 
                                                14 | 
| 
                                                    System.Xml.XmlDocument
                                                     Provides an older in-memory Extensible Markup Language (XML) programming interface that enables you to modify XML documents. Developers should prefer the classes in the System.Xml.XDocument package.
Commonly Used Types:
System.Xml.XmlNode
System.Xml.XmlElement
System.Xml.XmlAttribute
System.Xml.XmlDocument
System.Xml.XmlDeclaration
System.Xml.XmlText
System.Xml.XmlComment
System.Xml.XmlNodeList
System.Xml.XmlWhitespace
System.Xml.XmlCDataSection
 
When using NuGet 3.x this package requires at least version 3.4. 
                                                 | 
                                                8 | 
| 
                                                    System.Xml.XmlDocument
                                                     Provides an older in-memory Extensible Markup Language (XML) programming interface that enables you to modify XML documents. Developers should prefer the classes in the System.Xml.XDocument package.
Commonly Used Types:
System.Xml.XmlNode
System.Xml.XmlElement
System.Xml.XmlAttribute
System.Xml.XmlDocument
System.Xml.XmlDeclaration
System.Xml.XmlText
System.Xml.XmlComment
System.Xml.XmlNodeList
System.Xml.XmlWhitespace
System.Xml.XmlCDataSection
 
When using NuGet 3.x this package requires at least version 3.4. 
                                                 | 
                                                10 | 
| 
                                                    System.Xml.XmlSerializer
                                                     Provides classes for serializing objects to the Extensible Markup Language (XML) and deserializing XML data to objects.
Commonly Used Types:
System.Xml.Serialization.IXmlSerializable
System.Xml.Serialization.XmlSerializer
System.Xml.Serialization.XmlIgnoreAttribute
System.Xml.Serialization.XmlElementAttribute
System.Xml.Serialization.XmlAttributeAttribute
System.Xml.Serialization.XmlArrayAttribute
System.Xml.Serialization.XmlRootAttribute
System.Xml.Serialization.XmlArrayItemAttribute
System.Xml.Serialization.XmlTypeAttribute
System.Xml.Serialization.XmlEnumAttribute
 
When using NuGet 3.x this package requires at least version 3.4. 
                                                 | 
                                                10 | 
MonoAndroid 1.0
- No dependencies.
 
Xamarin.WatchOS 1.0
- No dependencies.
 
Xamarin.TVOS 1.0
- No dependencies.
 
Xamarin.Mac 2.0
- No dependencies.
 
Xamarin.iOS 1.0
- No dependencies.
 
WindowsPhone 8.0
- No dependencies.
 
Windows 8.0
- No dependencies.
 
.NETPortable 0.0
- No dependencies.
 
.NET Standard 1.3
- System.Runtime (>= 4.3.0)
 - Microsoft.NETCore.Targets (>= 1.1.0)
 - Microsoft.NETCore.Platforms (>= 1.1.0)
 
WindowsPhoneApp 8.1
- No dependencies.
 
.NET Standard 1.0
- System.Runtime (>= 4.3.0)
 - Microsoft.NETCore.Targets (>= 1.1.0)
 - Microsoft.NETCore.Platforms (>= 1.1.0)
 
.NETCore 5.0
- System.Runtime (>= 4.3.0)
 - Microsoft.NETCore.Targets (>= 1.1.0)
 - Microsoft.NETCore.Platforms (>= 1.1.0)
 
.NET Framework 4.5
- No dependencies.
 
MonoTouch 1.0
- No dependencies.
 
| Version | Downloads | Last updated | 
|---|---|---|
| 4.3.0 | 5 | 7/8/2025 |