whichdb
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solidDB vs Starcounter

solidDB: Low-latency in-memory plus on-disk SQL database with HotStandby failover, sold today by UNICOM. Starcounter: In-memory .NET application platform where C# classes are database tables, with no ORM in between.

key differences

  • solidDB is primarily a relational database; Starcounter is object.
  • Horizontal scaling is manual in solidDB and none in Starcounter.
  • Only solidDB has vector search, json, triggers, stored procedures, compression.
  • solidDB can run embedded in your application process.

choose soliddb for

  • +Telecom and network equipment control planes
  • +Embedded real-time data management in appliances
  • +Low-latency OLTP with hot-standby failover

best at · OLTP, Embedded, Cache

choose starcounter for

  • +Line-of-business .NET applications needing very fast transactions
  • +Retail and supply-chain systems with heavy in-memory workloads

best at · OLTP

solidDBLow-latency in-memory plus on-disk SQL database with HotStandby failover, sold today by UNICOM.
StarcounterIn-memory .NET application platform where C# classes are database tables, with no ORM in between.
overview
Primary model
Relational
Object
Also supports
Vector
Relational
Type
Database engine
Backend platform
Status
Active
Active
Developer
UNICOM Systems (UNICOM Global)
Starcounter AB
First release
1992
2009
Latest version
201.0 (Feb 2025)
3.0 (2020)
License
ProprietaryProprietary commercial license
ProprietaryStarcounter End User License Agreement
Free tier
—
—
popularity
WhichDB Score
4.7
2.6
Rank
#398
#472
GitHub stars
–
–
Stack Overflow questions
–
–
scale & guarantees
Comfortable data size
Medium (≤ 10 TB)
Medium (≤ 10 TB)
Horizontal scaling
Manual
None
Multi-region
Read replicas
None
ACID
Full
Full
Consistency
Strong
Strong
Schema
Strict
Strict
Architecture
In memory, Primary replica, Embedded, Client server
In memory, Embedded
deployment
Self-hosted
✓
✓
Vendor-managed cloud
—
—
Serverless
—
—
Embedded
✓
—
Edge
—
—
Clouds
–
–
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
SQL
Client languages
C, C++, Java
C#
Best for
OLTP, Embedded, Cache
OLTP
Add more to this comparisonNot sure either fits? Try smart match

solidDB vs Starcounter: FAQ

What is the difference between solidDB and Starcounter?

solidDB: Low-latency in-memory plus on-disk SQL database with HotStandby failover, sold today by UNICOM. Starcounter: In-memory .NET application platform where C# classes are database tables, with no ORM in between. solidDB is primarily a relational database; Starcounter is object. Horizontal scaling is manual in solidDB and none in Starcounter. Only solidDB has vector search, json, triggers, stored procedures, compression.

When should I choose solidDB over Starcounter?

Choose solidDB for telecom and network equipment control planes; embedded real-time data management in appliances; and low-latency OLTP with hot-standby failover. Choose Starcounter for line-of-business .NET applications needing very fast transactions; and retail and supply-chain systems with heavy in-memory workloads.

Is solidDB or Starcounter more popular?

solidDB ranks #398 on the WhichDB Score (4.7/100) and Starcounter ranks #472 (2.6/100). Popularity is not fit: check the requirements that matter for your project.

Are solidDB and Starcounter open source?

No. solidDB is proprietary, closed-source software. No. Starcounter is proprietary, closed-source software. License: Starcounter End User License Agreement.