ProxySDK

Download:https://github.com/jamesheck2019/ProxySDK/releases
NuGet:

Features

Assemblies for .NET 4.5.2 and .NET Standard 2.0 and .NET Core 2.1
Just one external reference (Newtonsoft.Json)
Easy installation using NuGet
Proxy Support

Supported Providers:

gimmeproxy.com
ip2proxy.com
pubproxy.com
getproxylist.com
proxy-list.download
proxycheck.io

Code simple:

    Sub SetClient()
        Dim MyClient As ProxySDK.IProxy = New ProxySDK.ProxyClient()
    End Sub

    Sub SetClientWithOptions()
         Dim Optians As New ProxySDK.ProxyConfig With {.ProxyIP = "172.0.0.0", .ProxyPort = 80, .ProxyUsername = "myname", .ProxyPassword = "myPass", .SetProxy = True}
        Dim MyClient As ProxySDK.IProxy = New ProxySDK.ProxyClient(Optians)
    End Sub

    Async Sub GetProxyFromGimme()
        Dim result = Await MyClient.Gimme()
        DataGridView1.Rows.Add(result.ip, result.ipPort, result.country)
    End Sub

    Async Sub GetProxyFromPubproxy()
        Dim result = Await MyClient.Pubproxy()
        For Each vid In result.data
            DataGridView1.Rows.Add(vid.ip, vid.ipPort, vid.country, vid.speed)
        Next
    End Sub

    Async Sub GetProxyFromGetproxylist()
        Dim result = Await MyClient.Getproxylist()
        DataGridView1.Rows.Add(result.ip, result.port, result.country, result.uptime)
    End Sub

    Async Sub GetProxyFromProxylistdownload()
        Dim result = Await MyClient.Proxylistdownload(ProxyTypeEnum.https, AnonTypeEnum.anonymous, ProxyCountryEnum.US)
        For Each vid In result
            DataGridView1.Rows.Add(vid.ip, vid.port, vid.IP_AND_PORT)
        Next
    End Sub

    Async Sub CheckProxy()
        Dim result = Await MyClient.CheckProxyStatus("172.1.0.0", 80)
        DataGridView1.Rows.Add(result.proxy, result.provider, result.type, result.city, result.country)
    End Sub