https://developer.azurecosmosdb.com/tools – List of tools
Note: You can not access Cosmos DB from Azure Storage Explorer (ASE) any more. That feature has been depreciated.
Microsoft Azure Portal CosmosDB Explorer
Azure Databases extension for VS Code
Need to download extension for VS Code.
Access container and item from Visual Studio Code.
Azure Data Factory
Copy and transform data in Azure Cosmos DB for NoSQL by using Azure Data Factory
Not free. Check for pricing.