Add 16 more databases to the catalog

Author: POTUSAITEJA

README.md

@@ -4,18 +4,18 @@
 
 ### The curated, primary-source reference for graph databases, RDF triple stores, property graph systems, and vector-capable graph engines.
 
-**A curated reference covering 54 graph databases — Neo4j, Apache Jena, Stardog, ArangoDB, Memgraph, TigerGraph, Dgraph, Virtuoso, GraphDB, Amazon Neptune, Oracle Graph, Google Spanner Graph, and more — with explicit vector-search classification for every entry.**
+**A curated reference covering 70 graph databases — Neo4j, Apache Jena, Stardog, ArangoDB, Memgraph, TigerGraph, Dgraph, Virtuoso, GraphDB, Amazon Neptune, Oracle Graph, Google Spanner Graph, SAP HANA Graph, and more — with explicit vector-search classification for every entry.**
 
 <p>
   <a href="#license"><img alt="License" src="https://img.shields.io/badge/License-MIT-34d399?style=for-the-badge"></a>
 </p>
 
 <p>
-  <img alt="Entries" src="https://img.shields.io/badge/Entries-54-60a5fa?style=flat-square">
-  <img alt="RDF" src="https://img.shields.io/badge/RDF-13-60a5fa?style=flat-square">
-  <img alt="LPG" src="https://img.shields.io/badge/LPG-19-fb923c?style=flat-square">
-  <img alt="Multi-model" src="https://img.shields.io/badge/Multi--model-15-22d3ee?style=flat-square">
-  <img alt="Specialized" src="https://img.shields.io/badge/Specialized-7-c084fc?style=flat-square">
+  <img alt="Entries" src="https://img.shields.io/badge/Entries-70-60a5fa?style=flat-square">
+  <img alt="RDF" src="https://img.shields.io/badge/RDF-17-60a5fa?style=flat-square">
+  <img alt="LPG" src="https://img.shields.io/badge/LPG-27-fb923c?style=flat-square">
+  <img alt="Multi-model" src="https://img.shields.io/badge/Multi--model-17-22d3ee?style=flat-square">
+  <img alt="Specialized" src="https://img.shields.io/badge/Specialized-9-c084fc?style=flat-square">
   <img alt="Native vector" src="https://img.shields.io/badge/Native%20vector-21-34d399?style=flat-square">
 </p>
 
@@ -39,11 +39,11 @@ The **Graph Database Resource Catalog** is a curated, primary-source reference f
 
 > **Which graph databases actually support vector search, and how?**
 
-Every one of the 54 entries is anchored to official documentation, product pages, or source repositories. The catalog distinguishes native vector support from connector-based, paired-extension, and sibling-service patterns — and where the public docs are ambiguous, the entry is marked `unclear` instead of being inflated.
+Every one of the 70 entries is anchored to official documentation, product pages, or source repositories. The catalog distinguishes native vector support from connector-based, paired-extension, and sibling-service patterns — and where the public docs are ambiguous, the entry is marked `unclear` instead of being inflated.
 
 **Topics covered:** graph database · RDF database · SPARQL · property graph · label property graph · LPG · knowledge graph · semantic graph · triple store · Cypher · Gremlin · GQL · SQL/PGQ · Datalog · vector search · HNSW · GraphRAG · multi-model database · graph analytics · graph OLTP · graph OLAP · knowledge graph engineering · semantic web
 
-**Databases in the catalog include:** Neo4j, Apache Jena, Fuseki, Virtuoso, Stardog, GraphDB, Amazon Neptune, RDFox, MarkLogic, Oxigraph, QLever, Blazegraph, TerminusDB, SurrealDB, ArangoDB, ArcadeDB, Memgraph, TigerGraph, Dgraph, JanusGraph, NebulaGraph, Apache HugeGraph, Apache AGE, OrientDB, TypeDB, Azure Cosmos DB for Gremlin, PuppyGraph, Kuzu, Ultipa, FalkorDB, Aerospike Graph, Tarantool Graph DB, TuGraph, AgensGraph, Fluree, RedisGraph, CozoDB, Oracle Graph, Google Spanner Graph, Gel (formerly EdgeDB), Datomic, HyperGraphDB, AnzoGraph DB, Weaviate, Cayley, DataStax Enterprise Graph, Eclipse RDF4J, AtomicServer, HelixDB, Dydra, and more.
+**Databases in the catalog include:** Neo4j, Apache Jena, Fuseki, Virtuoso, Stardog, GraphDB, Amazon Neptune, RDFox, MarkLogic, Oxigraph, QLever, Blazegraph, TerminusDB, SurrealDB, ArangoDB, ArcadeDB, Memgraph, TigerGraph, Dgraph, JanusGraph, NebulaGraph, Apache HugeGraph, Apache AGE, OrientDB, TypeDB, Azure Cosmos DB for Gremlin, PuppyGraph, Kuzu, Ultipa, FalkorDB, Aerospike Graph, Tarantool Graph DB, TuGraph, AgensGraph, Fluree, RedisGraph, CozoDB, Oracle Graph, Google Spanner Graph, Gel (formerly EdgeDB), Datomic, HyperGraphDB, AnzoGraph DB, Weaviate, Cayley, DataStax Enterprise Graph, Eclipse RDF4J, AtomicServer, HelixDB, Dydra, Alibaba Cloud GDB, IBM Db2 Graph, Huawei Graph Engine Service, ONgDB, Ontop, Apache Marmotta, RelationalAI, Raphtory, Katana Graph, Trovares xGT, Apache S2Graph, PoolParty, TopBraid EDG, IndraDB, HGraphDB, SAP HANA Graph, and more.
 
 ## What makes it different
 
@@ -71,22 +71,22 @@ Every one of the 54 entries is anchored to official documentation, product pages
 
 **By model**
 
-- **13** RDF / SPARQL-native stores
-- **19** Label property graph databases
-- **15** Multi-model systems with a real graph layer
-- **7** Specialized graph-adjacent systems
+- **17** RDF / SPARQL-native stores
+- **27** Label property graph databases
+- **17** Multi-model systems with a real graph layer
+- **9** Specialized graph-adjacent systems
 
 </td>
 <td valign="top" width="50%">
 
 **By vector strategy**
 
 - **21** Native (in-engine)
-- **4** Integrated
+- **5** Integrated
 - **5** Paired
 - **2** Sibling-service
-- **19** None
-- **3** Unclear
+- **32** None
+- **5** Unclear
 
 </td>
 </tr>

databases/alibaba-gdb/README.md

@@ -0,0 +1,42 @@
+# Alibaba Cloud Graph Database
+
+> Managed property graph service on Alibaba Cloud with Apache TinkerPop Gremlin and openCypher query surfaces.
+
+| | |
+|---|---|
+| **Website** | [alibabacloud.com/product/graph-database](https://www.alibabacloud.com/product/graph-database) |
+| **Model** | Label Property Graph |
+| **Status** | Production |
+| **License** | Commercial |
+| **Query** | Gremlin / openCypher |
+| **Vector strategy** | **None** |
+| **HA** | Managed multi-AZ deployment |
+| **Deployment** | Alibaba Cloud managed service |
+
+## Overview
+
+Alibaba Cloud Graph Database (GDB) is a fully managed, real-time property graph service on Alibaba Cloud. It implements the Apache TinkerPop Gremlin API as the primary query surface and is listed as an official TinkerPop provider, with additional support for openCypher. The service is positioned for workloads that need to store and traverse highly connected datasets without operating a graph database stack.
+
+GDB is part of Alibaba Cloud's broader database portfolio. Integration with DataWorks and other Alibaba Cloud tools is built in, and the service exposes standard Gremlin tooling including the Gremlin Console.
+
+## Vector strategy — None
+
+No native vector capability is documented inside the GDB engine. Alibaba Cloud exposes vector search through separate product lines (Lindorm, AnalyticDB) rather than inside the graph service, so applications that need vector similarity alongside GDB graph traversal pair it with one of those services at the application layer.
+
+## Best fit
+
+- Alibaba Cloud workloads that need a real-time property graph with standard TinkerPop tooling
+- Teams running in China or APAC regions where Alibaba Cloud is the primary provider
+- Graph workloads that benefit from an operationally managed service
+
+## Considerations
+
+- Commercial-only; pricing tied to Alibaba Cloud usage
+- No native vector support; pair with a separate Alibaba Cloud service
+- Availability varies by Alibaba Cloud region
+- Primarily Gremlin; Cypher-first teams should evaluate the fit
+
+## Sources
+
+- [Alibaba Cloud GDB product page](https://www.alibabacloud.com/product/graph-database)
+- [Alibaba Cloud GDB documentation](https://www.alibabacloud.com/help/product/102714.htm)