| UserSimCRS | UserSimCRS is an extensible user simulation toolkit for evaluating conversational recommender systems. Built on top of the DialogeKit library, it implements various user simulation approaches, provides support for various datasets and CRSs, and includes evaluation utilities. [GitHub] [WSDM’23 paper (v1)] [ECIR’26 paper (v2)] |
 |
CRS Arena is a platform to benchmark conversational recommender systems (CRSs) in a crowdsourced environment. It features side-by-side battles between two anonymous CRSs, where users can interact with them and declare a winner or a tie. [demo] [WSDM’25 paper] |
| PKG API | The PKG API is a tool for managing personal knowledge graphs (PKGs). It provides a simple solution for end users and service providers to administrate and interact with the users’ PKGs through natural language statements and simple web forms. [GitHub] [WWW’24 paper] |
 |
ArXivDigest is an online service providing personalized arXiv recommendations to end users. It operates as a living lab for researchers wishing to work on explainable scientific literature recommendations. [arxivdigest.org] [CIKM’20 paper] |
 |
IAI MovieBot is a conversational movie recommender system. While the focus is on movies, it is meant to offer a reusable and extensible development framework to supports research on natural language understanding and generation, preference elicitation, user modeling, and conversational recommendation. [GitHub] [CIKM’20 paper (v1)] [WSDM’24 paper (v2)] |
No longer available/maintained
 |
DAGFiNN is a conversational conference assistant that is available both as a chat widget on a website and as a social Furhat robot. The assistant can give recommendations for places to visit and for sessions to attend at the conference. [GitHub] [RecSys’22 paper] |
 |
SmartTable is an online spreadsheet application that is equipped with intelligent assistance capabilities. With a focus on relational tables, describing entities along with their attributes, it offers assistance for populating the table with additional entities (rows) and with additional entity attributes (columns). [SIGIR’18 paper] |
 |
Nordlys is a toolkit for entity-oriented and semantic search. It provides functionality for entity cataloging, entity retrieval, entity linking, and target type identication. Nordlys may be used as a Python library or as a RESTful API, and also comes with a web-based user interface. [GitHub] [SIGIR’17 paper] |