System.Reflection.MetadataLoadContext by: Microsoft
  • 2.079k total downloads
  • Latest version: 7.0.0
Provides read-only reflection on assemblies in an isolated context with support for assemblies that target different processor architectures and runtimes. Using MetadataLoadContext enables you to inspect assemblies without loading them into the main execution context. Assemblies in MetadataLoadContext are treated only as metadata, that is, you can read information about their members, but cannot execute any code contained in them.
System.Reflection.TypeExtensions by: Microsoft
  • 9.93k total downloads
  • Latest version: 4.7.0
Provides extensions methods for System.Type that are designed to be source-compatible with older framework reflection-based APIs. Commonly Used Types: System.Reflection.TypeExtensions System.Reflection.BindingFlags When using NuGet 3.x this package requires at least version 3.4.
System.Runtime.Caching by: Microsoft
  • 5.55k total downloads
  • Latest version: 8.0.0
Provides classes to use caching facilities. Commonly Used Types: System.Runtime.Caching.CacheEntryChangeMonitor System.Runtime.Caching.CacheEntryRemovedArguments System.Runtime.Caching.CacheEntryUpdateArguments System.Runtime.Caching.CacheItem System.Runtime.Caching.CacheItemPolicy System.Runtime.Caching.ChangeMonitor System.Runtime.Caching.FileChangeMonitor System.Runtime.Caching.HostFileChangeMonitor System.Runtime.Caching.MemoryCache System.Runtime.Caching.ObjectCache
System.Runtime.CompilerServices.Unsafe by: Microsoft
  • 11.825k total downloads
  • Latest version: 6.0.0
Provides the System.Runtime.CompilerServices.Unsafe class, which provides generic, low-level functionality for manipulating pointers. Commonly Used Types: System.Runtime.CompilerServices.Unsafe
System.Runtime.InteropServices.RuntimeInformation by: Microsoft
  • 2.271k total downloads
  • Latest version: 4.3.0
Provides APIs to query about runtime and OS information. Commonly Used Types: System.Runtime.InteropServices.RuntimeInformation System.Runtime.InteropServices.OSPlatform When using NuGet 3.x this package requires at least version 3.4.
System.Runtime.Numerics by: Microsoft
  • 3.774k total downloads
  • Latest version: 4.3.0
Provides the numeric types System.Numerics.BigInteger and System.Numerics.Complex, which complement the numeric primitives, such as System.Byte, System.Double and System.Int32. Commonly Used Types: System.Numerics.BigInteger System.Numerics.Complex When using NuGet 3.x this package requires at least version 3.4.
System.Runtime.Serialization.Formatters by: Microsoft
  • 2.518k total downloads
  • Latest version: 4.3.0
Provides common types for libraries that support runtime serialization. Commonly Used Types: System.SerializableAttribute System.Runtime.Serialization.ISerializable When using NuGet 3.x this package requires at least version 3.4.
System.Runtime.Serialization.Primitives by: Microsoft
  • 5.377k total downloads
  • Latest version: 4.3.0
Provides common types, including System.Runtime.Serialization.DataContractAttribute, for libraries that support data contract serialization. Commonly Used Types: System.Runtime.Serialization.StreamingContext System.Runtime.Serialization.OnDeserializingAttribute System.Runtime.Serialization.OnDeserializedAttribute System.Runtime.Serialization.OnSerializingAttribute System.Runtime.Serialization.OnSerializedAttribute System.Runtime.Serialization.EnumMemberAttribute System.Runtime.Serialization.DataMemberAttribute System.Runtime.Serialization.DataContractAttribute System.Runtime.Serialization.IgnoreDataMemberAttribute System.Runtime.Serialization.SerializationException When using NuGet 3.x this package requires at least version 3.4.
System.Security.AccessControl by: Microsoft
  • 9.829k total downloads
  • Latest version: 6.0.0
Provides base classes that enable managing access and audit control lists on securable objects. Commonly Used Types: System.Security.AccessControl.AccessRule System.Security.AccessControl.AuditRule System.Security.AccessControl.ObjectAccessRule System.Security.AccessControl.ObjectAuditRule System.Security.AccessControl.ObjectSecurity
System.Security.Cryptography.Cng by: Microsoft
  • 5.344k total downloads
  • Latest version: 5.0.0
Provides cryptographic algorithm implementations and key management with Windows Cryptographic Next Generation API (CNG). Commonly Used Types: System.Security.Cryptography.RSACng System.Security.Cryptography.ECDsaCng System.Security.Cryptography.CngKey When using NuGet 3.x this package requires at least version 3.4.
System.Security.Cryptography.OpenSsl by: Microsoft
  • 3.771k total downloads
  • Latest version: 4.3.0
Provides cryptographic algorithm implementations and key management for non-Windows systems with OpenSSL. Commonly Used Types: System.Security.Cryptography.RSAOpenSsl When using NuGet 3.x this package requires at least version 3.4.
System.Security.Cryptography.Pkcs by: Microsoft
  • 9.319k total downloads
  • Latest version: 6.0.1
Provides support for PKCS and CMS algorithms. Commonly Used Types: System.Security.Cryptography.Pkcs.EnvelopedCms
System.Security.Cryptography.Primitives by: Microsoft
  • 3.782k total downloads
  • Latest version: 4.3.0
Provides common types for the cryptographic libraries. Commonly Used Types: System.Security.Cryptography.ICryptoTransform System.Security.Cryptography.AsymmetricAlgorithm System.Security.Cryptography.SymmetricAlgorithm System.Security.Cryptography.HashAlgorithm System.Security.Cryptography.KeyedHashAlgorithm System.Security.Cryptography.HMAC System.Security.Cryptography.KeySizes System.Security.Cryptography.CryptographicException System.Security.Cryptography.CipherMode System.Security.Cryptography.PaddingMode System.Security.Cryptography.CryptoStream System.Security.Cryptography.CryptoStreamMode When using NuGet 3.x this package requires at least version 3.4.
System.Security.Cryptography.ProtectedData by: Microsoft
  • 16.277k total downloads
  • Latest version: 8.0.0
Provides access to Windows Data Protection Api. Commonly Used Types: System.Security.Cryptography.DataProtectionScope System.Security.Cryptography.ProtectedData
System.Security.Cryptography.Xml by: Microsoft
  • 2.374k total downloads
  • Latest version: 4.5.0
Provides classes to support the creation and validation of XML digital signatures. The classes in this namespace implement the World Wide Web Consortium Recommendation, "XML-Signature Syntax and Processing", described at http://www.w3.org/TR/xmldsig-core/. Commonly Used Types: System.Security.Cryptography.Xml.CipherData System.Security.Cryptography.Xml.CipherReference System.Security.Cryptography.Xml.DataObject System.Security.Cryptography.Xml.DataReference System.Security.Cryptography.Xml.DSAKeyValue System.Security.Cryptography.Xml.EncryptedData System.Security.Cryptography.Xml.EncryptedKey System.Security.Cryptography.Xml.EncryptedReference System.Security.Cryptography.Xml.EncryptedType System.Security.Cryptography.Xml.EncryptedXml System.Security.Cryptography.Xml.EncryptionMethod System.Security.Cryptography.Xml.EncryptionProperty System.Security.Cryptography.Xml.EncryptionPropertyCollection System.Security.Cryptography.Xml.KeyInfo System.Security.Cryptography.Xml.KeyInfoClause System.Security.Cryptography.Xml.KeyInfoEncryptedKey System.Security.Cryptography.Xml.KeyInfoName System.Security.Cryptography.Xml.KeyInfoNode System.Security.Cryptography.Xml.KeyInfoRetrievalMethod System.Security.Cryptography.Xml.KeyInfoX509Data System.Security.Cryptography.Xml.KeyReference System.Security.Cryptography.Xml.Reference System.Security.Cryptography.Xml.ReferenceList System.Security.Cryptography.Xml.RSAKeyValue System.Security.Cryptography.Xml.Signature System.Security.Cryptography.Xml.SignedInfo System.Security.Cryptography.Xml.SignedXml System.Security.Cryptography.Xml.Transform System.Security.Cryptography.Xml.TransformChain System.Security.Cryptography.Xml.XmlDecryptionTransform System.Security.Cryptography.Xml.XmlDsigBase64Transform System.Security.Cryptography.Xml.XmlDsigC14NTransform System.Security.Cryptography.Xml.XmlDsigC14NWithCommentsTransform System.Security.Cryptography.Xml.XmlDsigEnvelopedSignatureTransform System.Security.Cryptography.Xml.XmlDsigExcC14NTransform System.Security.Cryptography.Xml.XmlDsigExcC14NWithCommentsTransform System.Security.Cryptography.Xml.XmlDsigXPathTransform System.Security.Cryptography.Xml.XmlDsigXsltTransform System.Security.Cryptography.Xml.XmlLicenseTransform 30ab651fcb4354552bd4891619a0bdd81e0ebdbf When using NuGet 3.x this package requires at least version 3.4.
System.Security.Permissions by: Microsoft
  • 9.128k total downloads
  • Latest version: 7.0.0
Provides types supporting Code Access Security (CAS).
System.Security.Principal.Windows by: Microsoft
  • 7.901k total downloads
  • Latest version: 5.0.0
Provides classes for retrieving the current Windows user and for interacting with Windows users and groups. Commonly Used Types: System.Security.Principal.WindowsIdentity System.Security.Principal.SecurityIdentifier System.Security.Principal.NTAccount System.Security.Principal.WindowsPrincipal System.Security.Principal.IdentityReference System.Security.Principal.IdentityNotMappedException System.Security.Principal.WindowsBuiltInRole System.Security.Principal.WellKnownSidType When using NuGet 3.x this package requires at least version 3.4.
System.Text.Encoding.CodePages by: Microsoft
  • 11.124k total downloads
  • Latest version: 6.0.0
Provides support for code-page based encodings, including Windows-1252, Shift-JIS, and GB2312. Commonly Used Types: System.Text.CodePagesEncodingProvider
System.Text.Encodings.Web by: Microsoft
  • 14.19k total downloads
  • Latest version: 8.0.0
Provides types for encoding and escaping strings for use in JavaScript, HyperText Markup Language (HTML), and uniform resource locators (URL). Commonly Used Types: System.Text.Encodings.Web.HtmlEncoder System.Text.Encodings.Web.UrlEncoder System.Text.Encodings.Web.JavaScriptEncoder
System.Text.Json by: Microsoft
  • 16.973k total downloads
  • Latest version: 8.0.4
Provides high-performance and low-allocating types that serialize objects to JavaScript Object Notation (JSON) text and deserialize JSON text to objects, with UTF-8 support built-in. Also provides types to read and write JSON text encoded as UTF-8, and to create an in-memory document object model (DOM), that is read-only, for random access of the JSON elements within a structured view of the data. The System.Text.Json library is built-in as part of the shared framework in .NET Runtime. The package can be installed when you need to use it in other target frameworks.