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InMemory.Net vs SingleStore

InMemory.Net: Commercial in-memory columnar SQL engine for .NET that speeds up reporting over hundreds of millions of rows. SingleStore: Distributed SQL mixing in-memory rowstore and columnstore for real-time analytics, search and vectors.

key differences

  • InMemory.Net is primarily a columnar / OLAP database; SingleStore is relational.
  • SingleStore is built for larger datasets (≤ 1 PB) than InMemory.Net (≤ 100 GB).
  • Horizontal scaling is none in InMemory.Net and native in SingleStore.
  • Transactions: InMemory.Net offers none ACID; SingleStore offers full.
  • Only SingleStore has transactions, secondary indexes, full-text search, vector search, geospatial.

choose inmemory-net for

  • +Accelerating slow SQL Server or ODBC-backed reports
  • +Embedded analytics inside .NET line-of-business applications
  • +Interactive dashboards over tens of millions of rows on a desktop

best at · OLAP, Real-time analytics

choose singlestore for

  • +Real-time customer-facing analytics
  • +Fraud detection and risk scoring on streaming data
  • +Ad-tech and IoT ingestion with immediate querying
  • +Hybrid vector plus keyword search for RAG

best at · HTAP, Real-time analytics, Vector search

InMemory.NetCommercial in-memory columnar SQL engine for .NET that speeds up reporting over hundreds of millions of rows.
SingleStoreDistributed SQL mixing in-memory rowstore and columnstore for real-time analytics, search and vectors.
overview
Primary model
Columnar / OLAP
Relational
Also supports
Relational
Columnar / OLAP, Document, Vector, Search Engine, Spatial
Type
Database engine
Database engine
Status
Active
Active
Developer
InMemory.Net (Cork, Ireland)
SingleStore, Inc.
First release
2014
2013
Latest version
–
9.0.44 (Sep 24, 2026)
License
ProprietaryProprietary (per-server, SaaS and OEM licenses)
ProprietaryProprietary (free developer/standard licenses with limits)
Free tier
—
✓
popularity
WhichDB Score
0.2
29.0
Rank
#668
#92
GitHub stars
–
–
Stack Overflow questions
–
403
scale & guarantees
Comfortable data size
Small (≤ 100 GB)
Large (≤ 1 PB)
Horizontal scaling
None
Native
Multi-region
None
Read replicas
ACID
None
Full
Consistency
Strong
Strong
Schema
Strict
Strict
Architecture
In memory, Client server, Single node
Distributed, In memory, Client server
deployment
Self-hosted
✓
✓
Vendor-managed cloud
—
✓
Serverless
—
—
Embedded
—
—
Edge
—
—
Clouds
–
AWS, Google Cloud, Azure
capabilities
Transactions
—
✓
Joins
✓
✓
Secondary indexes
—
✓
Full-text search
—
✓
Vector search
—
✓
Geospatial
—
✓
JSON
—
✓
Change data capture
—
✓
Triggers
—
—
Stored procedures
—
✓
Materialized views
—
—
TTL / expiry
—
—
Pub/Sub
—
—
Columnar storage
✓
✓
In-memory
✓
✓
Durable persistence
✓
✓
Compression
✓
✓
Encryption at rest
—
✓
Role-based access
—
✓
Time travel
—
—
Branching
—
—
Online schema changes
—
✓
Streaming ingest
—
✓
Offline sync
—
—
Runs in WebAssembly
—
—
interfaces
Query languages
SQL, LINQ
SQL, MPSQL (stored procedures)
Client languages
C#
Java, Python, JavaScript, Go, C#, PHP, Rust
Best for
OLAP, Real-time analytics
HTAP, Real-time analytics, Vector search, Search
Add more to this comparisonNot sure either fits? Try smart match

InMemory.Net vs SingleStore: FAQ

What is the difference between InMemory.Net and SingleStore?

InMemory.Net: Commercial in-memory columnar SQL engine for .NET that speeds up reporting over hundreds of millions of rows. SingleStore: Distributed SQL mixing in-memory rowstore and columnstore for real-time analytics, search and vectors. InMemory.Net is primarily a columnar / OLAP database; SingleStore is relational. SingleStore is built for larger datasets (≤ 1 PB) than InMemory.Net (≤ 100 GB). Horizontal scaling is none in InMemory.Net and native in SingleStore.

When should I choose InMemory.Net over SingleStore?

Choose InMemory.Net for accelerating slow SQL Server or ODBC-backed reports, embedded analytics inside .NET line-of-business applications and interactive dashboards over tens of millions of rows on a desktop. Choose SingleStore for real-time customer-facing analytics; fraud detection and risk scoring on streaming data; and ad-tech and IoT ingestion with immediate querying.

Is InMemory.Net or SingleStore more popular?

SingleStore ranks #92 on the WhichDB Score (29.0/100) and InMemory.Net ranks #668 (0.2/100). Popularity is not fit: check the requirements that matter for your project.

Are InMemory.Net and SingleStore open source?

No. InMemory.Net is proprietary, closed-source software. No. SingleStore is proprietary, closed-source software.