
RisingWave
Streaming database that maintains incremental materialised views in SQL instead of Flink jobs
- Linux
- Self-hosted
- Web
3 alternatives · 4 questions answered
The directory
95 products matching your filters. Each one described on the same fields, so two tools can be read against each other rather than against their own marketing.
Showing 73–95 of 95

Streaming database that maintains incremental materialised views in SQL instead of Flink jobs
3 alternatives · 4 questions answered

The real-time big data database compatible with Cassandra
4 alternatives · 4 questions answered

The real-time distributed SQL database for data-intensive applications
4 alternatives · 5 questions answered

Multi-protocol event broker sold as software, cloud service or a hardware appliance
3 alternatives · 4 questions answered
Small, fast, self-contained SQL database engine
3 alternatives · 4 questions answered

Apache 2.0 MPP analytical database built for joins on open table formats
3 alternatives · 4 questions answered

Multi-model database combining documents, graphs, vectors and time-series
2 alternatives · 3 questions answered

Long-established enterprise MPP data warehouse, rebranded in 2026 as the Autonomous Knowledge Platform, sold for cloud, on-premises and hybrid.
4 alternatives · 5 questions answered

JMS message broker underpinning bank and telecom estates, now maintained rather than expanded
3 alternatives · 4 questions answered

Apache 2.0 distributed SQL database with MySQL wire compatibility and a separate columnar replica for analytical queries.
2 alternatives · 5 questions answered

Streaming SQL engine built on ClickHouse internals, shipping as one small binary
3 alternatives · 4 questions answered

Time-series database built on PostgreSQL for real-time analytics
3 alternatives · 5 questions answered

Managed ClickHouse with a workflow that turns SQL queries into hosted HTTP APIs
3 alternatives · 4 questions answered

Closed-source vector and full-text search service built directly on object storage, with cold queries measured in seconds rather than milliseconds.
4 alternatives · 5 questions answered

SQLite-lineage database platform for running very large numbers of small per-tenant databases, with an MIT-licensed engine.
4 alternatives · 5 questions answered

Open-source typo-tolerant search engine as an Algolia alternative
3 alternatives · 3 questions answered

Open-source in-memory data store forked from Redis
1 alternative · 3 questions answered

Erlang MQTT broker whose source is Apache 2.0 but whose official binaries need a paid subscription
3 alternatives · 4 questions answered

Distributed AI search platform for retrieval, ranking, and inference
3 alternatives · 4 questions answered

Scalable database clustering system for horizontal scaling of MySQL
3 alternatives · 5 questions answered

Apache 2.0 platform for running many Postgres instances on Kubernetes, with copy-on-write branching and scale-to-zero.
4 alternatives · 5 questions answered

Open source distributed SQL database for cloud native apps
4 alternatives · 4 questions answered

Managed vector database and vector lakebase for AI applications
3 alternatives · 4 questions answered
Head to head
Pairings from this slice of the directory, each one checked by two reviewers who agreed a buyer would weigh the two against each other.
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How this works
Pricing, platforms and feature lists are taken from each vendor's own pages. Limitations, answered questions and alternatives are researched separately and carry a source URL on the page that states them. Every product is described on the same fields, so two tools can be read against each other rather than against their own marketing.
Because we did not collect any. Softwr hosts no reviews, and a rating aggregated from somewhere else is not ours to publish as though it were an assessment we made. What is shown instead is what a tool costs, where it runs, and what it is concretely bad at.
A researcher proposes them, then two independent reviewers judge one question each: would a buyer evaluating this product seriously consider that one instead. 225 of 1,841 candidates failed and were deleted, including a font inspector matched to a dark mode extension. Only pairings that survived both rounds are published.
Not to be listed. A vendor can buy a place in the results on the home page, on a category listing or on the catalogue, and where they do the result carries a Sponsored label. Everything not carrying that label is ordered on the same criteria as everything else, and a paid place never changes where an unpaid one lands: the editorial order flows around it. Where a link earns a commission that is disclosed on the page carrying it.
Prices and plan limits move without notice, so treat anything with a number on it as a starting point and check the vendor before you buy. Where a claim could go stale it carries the source it came from, which is the fastest way to tell.
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Anyone can submit a tool. A person reads every submission, checks the pricing against the vendor’s own page, and nothing is published until it passes.