Open Source Datomic Alternatives

The best open source alternative to Datomic is Apache Cassandra. If that doesn't suit you, our users have ranked more than 25 alternatives to Datomic and ten of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Datomic are RethinkDB, FerretDB, H2 Database Engine and OrbitDB.

Datomic alternatives are mainly Relational Databases but may also be Business Intelligence Tools. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Datomic.

Datomic alternatives page was last updated

Datomic

Freemium • Proprietary

Datomic is a database of flexible, time-based facts, supporting queries and joins, with elastic scalability, and ACID...

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Apache Cassandra
Is this is a good alternative?
Yes
No
Free • Open Source
Relational Database
Mac
Windows
Linux
BSD
Amazon Web Services
Google Cloud Platform
Microsoft Azure
43 Apache Cassandra alternatives
Apache Cassandra has become the leading NoSQL platform driving many of today's modern business applications by offering continuous availability, high scalability and performance, strong security, and operational simplicity while lowering the overall cost of ownership.
- - Apache Cassandra is the most popular Open Source alternative to Datomic.
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Apache Cassandra Features
Persistent Storage
NoSQL database
High Availability
REST API
GraphQL
Distributed
RethinkDB
Is this is a good alternative?
Yes
No
Free • Open Source
Mac
Windows
Linux
BSD
72 RethinkDB alternatives
The open-source database for the realtime web.
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RethinkDB Features
Distributed Database
FerretDB
Is this is a good alternative?
Yes
No
Free • Open Source
Mac
Windows
Linux
Online
Self-Hosted
90 FerretDB alternatives
FerretDB (formerly MangoDB) is an open-source proxy, which converts MongoDB wire protocol queries to SQL, and uses PostgreSQL as a database engine.
- - FerretDB is the most popular Self-Hosted alternative to Datomic.
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FerretDB Features
NoSQL database
MongoDB
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H2 Database Engine
Is this is a good alternative?
Yes
No
Free • Open Source
Relational Database
Mac
Windows
Linux
56 H2 Database Engine alternatives
H2 is a relational database management system written in Java. It can be embedded in Java applications or run in the client-server mode. The disk footprint (size of the jar file) is about 1 MB.
H2 Database Engine has no features, suggest some!
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OrbitDB
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No
Free • Open Source
Mac
Windows
Linux
BSD
94 OrbitDB alternatives
OrbitDB is a serverless, distributed, peer-to-peer database. OrbitDB uses IPFS as its data storage and IPFS Pubsub to automatically sync databases with peers. It's an eventually consistent database that uses CRDTs for conflict-free database merges making OrbitDB an excellent...
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OrbitDB Features
Serverless
Distributed
Peer-To-Peer
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Titan Database
Is this is a good alternative?
Yes
No
Free • Open Source
Relational Database
Mac
Windows
Linux
85 Titan Database alternatives
Titan is a scalable graph database optimized for storing and querying graphs containing hundreds of billions of vertices and edges distributed across a multi-machine cluster. Titan is a transactional database that can support thousands of concurrent users executing complex graph...
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Titan Database Features
Graph database
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XTDB
Is this is a good alternative?
Yes
No
Free • Open Source
Self-Hosted
10 XTDB alternatives
The open database with temporal graph query.
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XTDB Features
Graph database
Datahike
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Yes
No
Free • Open Source
Self-Hosted
26 Datahike alternatives
Datahike is a durable Datalog database powered by an efficient Datalog query engine. This project started as a port of DataScript to the hitchhiker-tree. All DataScript tests are passing, but we are still working on the internals.
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Datahike Features
Time-machine
Persistent Storage
Clojure
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Postgres-XC
Is this is a good alternative?
Yes
No
Free • Open Source
Relational Database
Business Intelligence Tool
Linux
48 Postgres-XC alternatives
Postgres-XC is a write-scalable synchronous multi-master PostgreSQL cluster with the following features. 1) Both read and write scalability. 2) Configured with more than one server. 3) Complete global transaction and visibility management.
Postgres-XC has no features, suggest some!
Discontinued
Postgres-XC has not been updated since 2015.
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RecallGraph
Is this is a good alternative?
Yes
No
Free • Open Source
Mac
Windows
Linux
Self-Hosted
10 RecallGraph alternatives
RecallGraph is a versioned-graph data store - it retains all changes that its data (vertices and edges) have gone through to reach their current state.
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RecallGraph Features
Graphs
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