Stardog Knowledge Graph

Amazon Neptune is a fully managed graph database supporting RDF and property graphs. Parquet export for analytics. SPARQL queries on RDF. Instant replication for read scaling. Backups to S3. Integrate…

Amazon OpenSearch supports approximate nearest neighbor search. Integrates with vector models. Supports k-NN search algorithms. Hosted service on AWS. KNN queries with low latency.

Spotify's Annoy library indexes high-dimensional vectors in memory. Fast search and low memory usage. Python and C++ implementations. Used internally by Spotify. Active maintenance.

AuraLineage is a data governance platform trusted by enterprises to track ownership, quality, and lineage of datasets. Crowdsource metadata: analysts tag columns with business glossary terms. Complian…

Blazegraph is an RDF database supporting SPARQL queries. Named graphs for data organization. Inference over OWL ontologies. Full-text indexing. Open-source origins, now maintained by Blazegraph team.

Cayley is an open-source graph database written in Go. Support for RDF quads. Gizmo query language. Multiple backends: memory, LevelDB, SQL. Designed for large semantic datasets. Google-backed origins…

Chroma is an open-source embedding database built for AI applications. Run locally or distributed. SQLite backend. Hugging Face integration. Simple API. Easy to get started.

ComponentFinder helps you find electronic components by specification. You search by part number or specifications. Datasheets, pricing, and availability are listed. You compare alternatives and choos…

Cypher is a declarative query language for property graphs. Pattern matching syntax. Create, read, update, delete operations. JOINs via relationships. Standard adopted by TigerGraph and Memgraph.

DGraph is an open-source distributed graph database with GraphQL API. Sharded and replicated for scale. Bulk loader ingests millions of triples. Fine-grained RBAC per predicate. Used by Slack. Growing…

AWS DynamoDB supports vector search natively. Integrates with DynamoDB items. No separate vector database. Managed service. Integrates with AWS ecosystem.

Elasticsearch 8+ supports dense vectors and ANN search. Integrates with existing Elasticsearch clusters. Combine dense and sparse retrieval. Vector store for LLM retrieval. Widely adopted.

EmbedWell Store adds pgvector to open-source Postgres. Serverless PostgreSQL with vector support. Hosted or self-hosted. Edge function integration with LLMs. Fast setup.

Epsilla is a vector data warehouse for AI applications. Native support for both vectors and metadata. SQL interface for easy querying. GPU acceleration options. Emerging player in vector data space.

Meta's Faiss library searches billions of vectors. GPU acceleration with CUDA. Index compression reduces memory. Research and production use. Widely used in recommendation systems.

GameNGen is a research project from Google that generates playable game environments. A neural network produces frames in real time based on player input. The team trained it to simulate classic title…

Genesis is an open-source physics platform for generative robotics and embodied AI. It runs fast simulations used to train agents and robot models. The framework is used by AI researchers and robotici…

Apache Giraph processes large graphs on Hadoop clusters. Bulk Synchronous Parallel (BSP) model. Gimel connectors to data sources. Iterative graph algorithms. Used by Facebook and Yahoo.

Google Knowledge Graph powers search results and Q&A. Structured facts about entities. Reasoning and inference over relationships. Proprietary. Used by Google Search and Google Assistant.

Inciteful is a free literature mapping tool for researchers. It builds citation networks from any seed article. Users explore related papers and find key works fast. The tool is popular with students …

InfluxDB is optimized for metrics and events at high cardinality. Downsampling reduces long-term storage. Continuous aggregates compute sums pre-emptively. InfluxQL and Flux query languages. Cloud and…

Iris.ai is a research workspace for R&D teams. It uses AI to extract, filter, and summarize scientific literature. Researchers organize projects and share findings with colleagues. Large research orga…

JanusGraph is an open-source scalable graph database. Supports billions of vertices and edges. Pluggable storage backends (Cassandra, HBase, Bigtable). Elasticsearch indexing. Full ACID transactions. …

JobCopilot is an AI autopilot that searches, filters, and applies to jobs. It writes personalized cover letters for each role based on the user's profile. Candidates set the criteria and JobCopilot wo…

Kong is an open-source API gateway built on NGINX and Lua. Route requests by hostname, path, header. Rate limiting, OAuth, and JWT plugins. Kong Manager UI administers routes and plugins. Kong for Kub…

LanceDB is a vector database built on Lance format for efficient columnar storage. Local or cloud deployments. Arrow-native. Integrates with pandas and DuckDB. Developer-focused.

Marqo is an open-source tensor search engine. No API calls to embeddings service. Local document indexing. Query-specific fine-tuning. Built for ease of use.

Memgraph is an in-memory graph database with millisecond query latency. Full ACID transactions. High availability via replication. Bolt protocol compatible with Neo4j tools. Enterprise version adds mo…

Milvus is an open-source vector database for large-scale similarity search. Billion-vector scale. Multiple index types: IVF, HNSW, DiskANN. Cloud-hosted or self-hosted. Supports multiple languages. CN…

MongoDB Atlas adds vector search to collections. Stored alongside documents. Hybrid queries combining filters. Cloud-hosted. Integration with Vector Search index.

MongoDB provides SDKs for vector embeddings. Integrates with OpenAI embeddings. Python and JS support. Simplified development. Part of Atlas ecosystem.

MuleSoft provides an iPaaS platform with API management, integration, and automation. GraphQL support alongside REST. Reusable components for common integrations. Anypoint Studio IDE for rapid develop…

Neon provides serverless Postgres with pgvector support. Auto-scaling compute. Point-in-time recovery. Branching for dev/test. Simple pricing. Vector search at scale.

New Relic's NRQL query language provides powerful analytics across metrics, logs, and traces. Custom dashboards visualize any combination. Automated anomaly detection. Workflow automation routes alert…

NMSLIB provides approximate nearest neighbor search. C++, Python, Java, Ruby bindings. HNSW and other algorithms. High performance tuning options. Research origins.

OpenObserve is an open-source log platform optimized for cost. Parquet storage and columnar compression cut costs vs Splunk by 80%. Single API for logs, metrics, and traces. Sub-second query latency. …

Pinecone is a fully managed vector database for semantic search. Serverless scaling handles billions of vectors. Metadata filtering alongside semantic search. Hybrid search combining keyword and vecto…

pgvector is an open-source extension for Postgres. Store and search vectors in Postgres. Index types: IVF, HNSW. No separate database needed. Simple to deploy. Community-maintained.

Qdrant is an open-source vector database optimized for semantic search and recommendation systems. HNSW indexing with pruning. Payload storage with filtering. Snapshots and recovery. Rust implementati…

RisingWave is a cloud-native stream processing SQL database. Continuous aggregations and joins. Auto-saves state. PostgreSQL wire protocol compatible. Time-series optimized. Series-A funded.

Rockset combines real-time search with SQL. Indexes all data automatically. Sub-second queries. Supports JSON, Parquet, CSV. Serverless scaling. Series-B company.

Segment collects event data from web, mobile, and server sources into a central customer data lake. Track user behavior via simple JavaScript or API calls. One-click syncs to 500+ destinations (Salesf…

Splunk Enterprise searches events and logs with SPL language. Indexes everything for fast ad-hoc queries. Time-based analysis. Compliance reports. Market leader for enterprise search. IPO company.

Supabase hosts open-source Postgres with pgvector. IVF and HNSW indexing. Realtime subscriptions. Row-level security. Built on pg_trgm for text search.

TigerGraph is an in-memory graph database optimized for speed. GSQL query language. Real-time pattern detection. ML algorithms built-in (PageRank, triangle counting). Parallel execution. Used by Uber …

Transaction Processing Council publishes industry-standard benchmarks for database systems. TPC-C measures transactional throughput in online processing workloads. TPC-H tests analytical query perform…

Vald is an open-source distributed vector database. High-dimensional approximate nearest neighbor search. Horizontally scalable. Python and Go clients. Japanese origin, growing adoption.

Weaviate is an open-source vector database with HNSW indexing. GraphQL API for queries. Multi-model: combine vectors and structured data. Semantic search and RAG out of box. Cloud-hosted option. Growi…

Zilliz Cloud is a managed Milvus service. Auto-scaling and multi-region replication. No infrastructure management. Pay-per-use pricing. Founded by Milvus creators.