Ontop vs Query Streams
Ontop
ontop-vkg.org
Query Streams
querystreams.comSide by side
| Figure | Ontop | Query Streams |
|---|---|---|
| Price from | — | $15/mo |
| Free plan | — | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 0 | 4 |
| Spec score · Data Virtualization Software | 7.9 (#11) | 9.1 (#1) |
| License | Ontop is available under the Apache 2.0 license. | The service and Agent are proprietary commercial software licensed for internal business use; the terms prohibit copying, modification, reverse engineering and redistribution. |
| Purpose | Ontop exposes relational database contents as virtual knowledge graphs and translates SPARQL queries into SQL queries executed by the source databases. | Query Streams provides governed access to databases and APIs for spreadsheets, AI clients, apps, and scheduled data syncs through an outbound-only Network Agent. |
Plans
Query Streams
- FreeFree
- Personal Core$15 a month
- Personal Plus$30 a month
- Business Core$50 a month
In their own words
Query Streams
Query Streams gives spreadsheets, AI clients, apps, and scheduled syncs governed access to databases and APIs through an outbound-only Network Agent. Nova AI accepts plain-English questions, reads a database schema, runs read-only SQL, and returns metrics, tables, and charts. A hosted MCP server connects sources to Claude, Cursor, ChatGPT, and Grok using a revocable key. Excel and Google Sheets add-ins run shared saved queries and stream live results into cells without exposing SQL to recipients. Federated queries join data from multiple databases and API sources in one SQL statement. Scheduled results can be sent to supported services as often as every five minutes. The Network Agent makes an encrypted outbound connection, needs no inbound ports or VPN, restricts queries to SELECT, WITH, and EXPLAIN, and keeps database credentials on the user's network. The Free tier is free and includes 5 MB/month query traffic; paid plans start at $15 a month. New accounts receive a 30-day trial with every feature unlocked and no credit card.