Sarus enables practitioners to work on personal data without ever accessing it. It works as a data access service that filters queries and enforces the highest standards of privacy. Sarus's lightweight proxy connects directly to the data infrastructure.​ It allows manipulating the data in SQL or using all the standard data science libraries. All information is protected according to the privacy policies defined by the data owner, including differential privacy. Synthetic data is provided natively as a complement to the remote execution of queries on the original data. Sarus started in 2020 to reconcile data analysis and privacy and is backed by VCs including Y Combinator.