Thingworx Extensions

We are currently migrating our application to ThingWorx 10.1 and are looking for the following extensions compatible with this version:

• SCO_Common-extension
• TWX_Converge_Styles_ExtensionPackage
• LogoutWidget-Mfg-extension

Could anyone let me know where these extensions can be downloaded for ThingWorx 10.1? If they are no longer supported, is there an alternative or updated replacement available?