The script pulls the latest list of Sitecore Marketplace modules, including the release and revision dates.

GetSitecoreMarketplaceModulesList.ps1

$VerbosePreference = "Continue"

$relpattern = "(<label>Release date:</label>\s*<span.*>(?<release>[0-9/:AMP\s]*)</span>)"
$revpattern = "(<label>Revision date:</label>\s*<span.*>(?<revision>[0-9/:AMP\s]*)</span>)"

function Get-PageContent {
    param(
        [string]$Link
    )

    [System.Net.HttpWebRequest]$r = [System.Net.WebRequest]::Create("https://marketplace.sitecore.net" + $Link)
    [System.Net.HttpWebResponse]$resp = $r.GetResponse()
    $reqstream = $resp.GetResponseStream()
    $sr = New-Object System.IO.StreamReader $reqstream
    $sr.ReadToEnd()
}

Write-Verbose "Requesting the list of available modules."
if(!$searchResponse) {
    $searchResponse = Invoke-RestMethod -Uri "https://marketplace.sitecore.net/Services/Modules.svc/Search" -Method Post -ContentType "application/json;charset=UTF-8" -Body '{"query":"", "offset":"0", "count":"1000", "category":"", "requirement":"", "familyIds":[], "support":"" }'
}

$modules = $searchResponse.more.items | Where-Object { $_.ModuleName } | Select-Object -Property ModuleName, Description, Link, Like | Sort-Object -Property Like -Descending
foreach($module in $modules) {
    Write-Verbose "Downloading the module page $($module.modulename)"
    $page = Get-PageContent -Link $module.link

    if($page) {
        if($page -match $relpattern) {
            $release = [datetime]$Matches["release"]
            $module | Add-Member -Name "release" -Value $release -MemberType NoteProperty
        }
        if($page -match $revpattern) {
            $revision = [datetime]$Matches["revision"]
            $module | Add-Member -Name "revision" -Value $revision -MemberType NoteProperty
        }

        Write-Verbose "$($module.modulename) : rev - $($module.revision) : rel - $($module.release)"
    } else {
        Write-Verbose "No page content found"
    }
}

$modules