HumanSignal

HumanSignal is a remote-first software company founded in 2019, formerly known as Heartex. Its team operates on a distributed basis, with a geographic presence spanning North America, Europe and South America. The company builds open source and enterprise data labeling tools that help data scientists annotate data to train machine-learning and artificial-intelligence models, covering configurable annotation workflows, human-in-the-loop oversight and automation of ML data operations.

Its principal product is Label Studio, described as the world's most popular open source data labeling platform. The software lets teams configure every aspect of the annotation process, capture nuanced human decisions and scale operations with automation. It has more than 250,000 users. HumanSignal has raised $30M in total funding, and counts Zendesk, Outreach and Trivago among its notable customers.

The company's stated position is that real human oversight is essential for AI systems that work, and its mission is to help any organisation turn raw data into learnable data for AI. Technical work centres on machine learning, data annotation, human-in-the-loop ML and open source software. The founding team bonded over summiting Stok Kangri in the Himalayas, discussing data science at 20,187 feet, and the company describes itself as growing quickly while staying focused on that core mission.