Deephaven
Real-time, time-series analytics engine with a visual query studio.
About
Deephaven Community Core is an open, real-time column-oriented analytics engine with relational database features. Queries run seamlessly over both live streaming data and historical data, and it ships with a browser-based studio for building queries, dashboards, and visualizations. The company is open-core: Community Core is free, while Deephaven Enterprise is the paid version that the vendor says runs at hedge funds, banks, and financial exchanges.
The GitHub org is actively maintained (pushed today, 2026-10-16, ~51 committers, ~2,400 commits) with clients in Python, Java/Groovy, C++, JavaScript, Go, and R over gRPC, protobuf, and Apache Arrow Flight. You can pip install deephaven-server or run it from Docker. It is genuinely strong for ticking, time-series workloads; it is heavier than a typical BI tool to operate, and the enterprise pricing is not public.
What it can do
- Real-time and historical unified queries
- Column-oriented time-series engine
- Web-based query studio and dashboards
- Python, Groovy, Java, C++, JS, Go, R clients
- gRPC, protobuf, Apache Arrow Flight, Barrage protocol
- High-performance CSV ingestion
- VS Code extension
Setup
- Install Docker or Python 3.8+ with Java 11+.
- Run the Community Core Docker image, or pip install deephaven-server.
- Start a server session and open the web studio.
- Ingest streaming or batch data and build queries in Python or Groovy.
Prerequisites
Docker or Python 3.8+ with Java 11+; familiarity with dataframes helps.
Use cases
Works with
Trust score — 7/10
Scored 7/10 (TIER verified, metrics-v1). Evidence: deephaven-core on GitHub (363 stars, 100 forks, not archived, pushed 2026-10-16 via live API check); Maven shows 93 releases and ~2,449 commits from 51 committers; open-core with Community Core docs at deephaven.io. Strengths: active maintenance, credible enterprise heritage (finance), genuinely distinct real-time engine, multi-language clients. Docked for: (1) modest star count for the engineering quality, suggesting niche adoption; (2) enterprise customer claims are vendor-stated. License: open-core (Community Core; license key listed as 'other').
★ 363 GitHub stars
How the trust score is built
Full methodology →- Adoption · stars/downloads, log-scaled vs peers
- 6.0/10
- Maintenance · recency, releases, issue load
- 8.0/10
- Openness · license + docs
- 8.0/10
- Manual review · sanity read + red-flag check
- 7.0/10
- · deephaven-core: 363 stars, 100 forks, not archived, pushed 2026-10-16 (live GitHub API)
- · Maven: 93 releases, ~2,449 commits from 51 committers
- · Open-core; Community Core docs at deephaven.io (verified live)
- · Vendor-stated enterprise users: hedge funds, banks, financial exchanges
Sources
Every fact above was checked against these sources. Where a claim comes from the provider and couldn't be independently verified, the text says so.