How do their growth rates compare?

HydraDB OSS has a month-over-month growth rate of +5.8%; Llongterm has 0%.

How does pricing compare?

HydraDB OSS: Freemium, Contact for Pricing. The open-source edition is free to self-host with community support. Managed cloud starts around $25/month minimum usage, a Scale tier around $300/month, and an Enterprise plan with custom (contact sales) pricing. Llongterm: Freemium, Paid. Freemium with paid plans. Llongterm offers a free entry point to build and test memory, with paid tiers for production usage. Specific plan prices are not prominently published, so higher-volume use may require contacting the vendor.

What are alternatives to HydraDB OSS and Llongterm?

Other tools in related categories include Notion, Hermes-Agent, Composio, Merge, Pinecone.

HydraDB OSS vs Llongterm — Traffic (29.64K vs 0), Pricing & Verdict

Open AI Tools

HydraDB OSS vs Llongterm — Traffic (29.64K vs 0), Pricing & Verdict | Open AI Tools

Side-by-Side Traffic & Specification Matrix

Dimension / Metric	HydraDB OSS	Llongterm
Official Domain	hydradb.com	llongterm.com
Pricing Model	Freemium, Contact for Pricing	Freemium, Paid
Monthly Visits	29.64K (29,635)	0 (0)
MoM Traffic Delta	+1.61K (+5.8%)	0 (0%)
Primary Market & Share	🇮🇳 India (65%)	🌐 Global (—)
Direct Visits / mo	17.15K	0
User Rating	4.4	4.2
Supported Platforms	Website	Website

HydraDB OSS

Graph database built on object storage for agent memory and context

Object-storage-native engine

Graph, WAL, value, and index data all live in S3-compatible storage with a hot/warm/cold tiering strategy, cutting infrastructure cost dramatically versus memory-resident graph databases.

Unified retrieval layer

One query can traverse graph relationships and run vector, BM25, and reranked search together, so agents do not have to orchestrate four separate systems.

Temporal versioning and memory

Every change is tracked, letting agents recall what happened, when, and in what sequence, which supports auditability and long-running agent workflows.

Neo4j-compatible interfaces

OpenCypher over Bolt plus an HTTP API and SDKs make it approachable for teams already familiar with property graphs.