Neptune vs StromaDB
Neptune is a multiple database; StromaDB is a property graph database. Neptune (2017-11, Proprietary, C++) ranks #4 this month; StromaDB (2026-07, Elastic-2.0, Rust) ranks #152.
| Attribute | Neptune | StromaDB |
|---|---|---|
| At a glance | ||
| Rank | #4 | #152 |
| Score | 65.5 | 9.2 |
| GitHub stars | — | 2 |
| Popularity | 81.2 | 12.5 |
| Activity | 95.5 | 38.8 |
| Community | 53.7 | 30.6 |
| Research | 58.4 | 49.6 |
| Fundamentals | ||
| Description | A fully managed graph database service from AWS supporting both property graph and RDF models. Available as Neptune Database (for transactional workloads) and Neptune Analytics (for analytical queries). | A source-available property graph engine written in Rust that combines typed edges, vector search, and bitemporal facts for retrieval-augmented generation workloads. Queried through a composable operator API over CLI, HTTP, and MCP rather than a graph query language. |
| Vendor | Amazon Web Services | Katsuhide Tsuruta |
| Model | Multiple | Property Graph |
| Kind | database | database |
| Category | Enterprise | Emerging |
| First released | 2017-11 | 2026-07 |
| Status | active | active |
| License | Proprietary | Elastic-2.0 |
| Written in | C++ | Rust |
| Query languages | Gremlin, SPARQL, openCypher | Custom API |
| gdotv support | yes | no |
Feature scores — not surveyed for StromaDB
| Feature | Neptune | StromaDB |
|---|---|---|
| Community & Business | ||
| Active development | ✓ | — |
| Commercial support | ✓ | — |
| Live community | ✓ | — |
| Open Source | · | — |
| Pricing | ✓ | — |
| Trendiness | ✓ | — |
| Deployment | ||
| Containerization | · | — |
| Work as dedicated instance | ✓ | — |
| Work as embedded | · | — |
| Testing in-memory version | · | — |
| Platform | ||
| Operating on Linux | ✓ | — |
| Operating on Windows | · | — |
| SaaS offering | ✓ | — |
| Operations | ||
| Automatic updates | ✓ | — |
| Client side caching | ✓ | — |
| Data versioning support | · | — |
| Live backups | ✓ | — |
| Distribution | ||
| Cluster Re-balancing | · | — |
| Data Distribution | · | — |
| High-Availability | ✓ | — |
| Query Distribution | 0.5 | — |
| Replication support | ✓ | — |
| Developer Experience | ||
| Data types defined | 0.5 | — |
| Logging/Auditing | ✓ | — |
| Object-Graph Mapper | · | — |
| Reactive programming | ✓ | — |
| Documentation up-to-date | ✓ | — |
| Binary protocol | ✓ | — |
| CLI | ✓ | — |
| GUI | ✓ | — |
| Data Model | ||
| Multi-database | · | — |
| Graph-native data | ✓ | — |
| REST API | ✓ | — |
| Query Language | ✓ | — |
| Transactions | ||
| Granular locking | ✓ | — |
| Multiple isolation levels | ✓ | — |
| Read committed transaction | ✓ | — |
| Transaction support | ✓ | — |
| Schema & Security | ||
| Constraints | ✓ | — |
| Schema support | 0.5 | — |
| Secondary indexes | ✓ | — |
| Server side procedures | · | — |
| Triggers | · | — |
| Authentication | ✓ | — |
| Authorization | ✓ | — |
| Data encryption | ✓ | — |
Links
- Neptune · website · full profile
- StromaDB · website · github · full profile