Update README.md

README.md

@@ -22,7 +22,8 @@ The `Librarian Bots` organization is an effort by Hugging Face's [Machine Learni
 
 ## 👾 Spaces
 - [🤖 Librarian Bot Metadata Request Service 🤖](https://huggingface.co/spaces/librarian-bots/metadata_request_service): With a few clicks, enrich your Hugging Face models with key metadata!
-- [Dataset-to-Model Monitor](https://huggingface.co/spaces/librarian-bots/dataset-to-model-monitor): track datasets hosted on the Hugging Face Hub and get a notification when new models are trained on the dataset you are tracking.  
+- [Dataset-to-Model Monitor](https://huggingface.co/spaces/librarian-bots/dataset-to-model-monitor): track datasets hosted on the Hugging Face Hub and get a notification when new models are trained on the dataset you are tracking.
+- [Base Model Explorer](https://huggingface.co/spaces/librarian-bots/base_model_explorer): This Space allows you to find children models for a given base model and view the popularity of models for fine-tuning.
 - [MetaRefine](https://huggingface.co/spaces/librarian-bots/MetaRefine): refine Hub search results by metadata quality and model card length. 
 - [metadata explorer](https://huggingface.co/spaces/librarian-bots/metadata_explorer): a space for exploring high-level information about the metadata associated with models hosted on the Hugging Face Hub.
 - [Hugging Face Datasets Semantic Search](https://huggingface.co/spaces/librarian-bots/huggingface-datasets-semantic-search): a Space that allows you to use semantic search to find relevant datasets on the Hugging Face Hub.