Hi Product Hunt 👋 I'm Jean-Charles, an IT Director in France and the person behind Nexus DataHub. Nexus didn't start as a startup idea. It started as a problem I kept facing at work. In real-world IT environments, applications often work perfectly well for years, but getting their data into another ERP, service, API or newer application can become surprisingly complicated. And when some of those systems rely on Informix or other legacy databases, “just connect the API” isn't really an option. I looked at existing ETL and integration platforms, including projects such as NiFi and Airbyte. They're powerful, but I kept feeling that solving my problem shouldn't require building an infrastructure project around the integration itself. So I started building the tool I wanted to use. The original idea was simple: connect to a database in read-only mode, extract exactly what is needed, prepare the data, keep it traceable, and expose it securely through an API. Then came all the interesting problems: incremental extraction, watermarks, late-arriving data, durable queues, retries, deduplication, history, fuzzy search, API authentication, replay protection, backups, safe upgrades... Nexus gradually became a real product. One principle has remained from the beginning: complexity has to earn its place. Nexus currently uses PostgreSQL, FastAPI, a dedicated extraction worker, React and rootless Podman. No Kafka just because it's a data platform. No Kubernetes because it looks good on an architecture diagram. No Elasticsearch until the actual workload requires it. Today I'm opening Nexus to people outside my own environment. There's a full 30-day trial, so you don't have to take my word for any of this. Install it, connect a database, explore it, and feel free to break things. I'm particularly interested in criticism from people working with data integration, legacy systems, APIs and infrastructure. What would you challenge first?

Nexus DataHub

Turn your databases into secure, usable APIs

Turn your databases into secure, usable APIs