
NATS
High-performance messaging system for cloud-native applications
- Linux
- macOS
- Windows
- +1
2 alternatives · 3 questions answered
The directory
48 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 25–48 of 48

High-performance messaging system for cloud-native applications
2 alternatives · 3 questions answered

The world's leading graph database
4 alternatives · 3 questions answered

Open-source search and analytics suite forked from Elasticsearch
2 alternatives · 3 questions answered

The world's most complete, reliable, and secure database
3 alternatives · 4 questions answered

The world's most advanced open source relational database
3 alternatives · 5 questions answered

The Meta-lineage distributed SQL query engine, distinct from the Trino fork
3 alternatives · 4 questions answered

Centralised data access governance from the creators of Apache Ranger, now rebranding as Trust3 AI
4 alternatives · 4 questions answered

Open-source message broker supporting AMQP and other protocols
1 alternative · 3 questions answered

The fully transactional NoSQL document database
4 alternatives · 5 questions answered

Kafka-compatible streaming platform with no ZooKeeper or JVM
2 alternatives · 3 questions answered

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

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

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

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

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