Amazon Neptune costs $25/mo.
These cost $0.
4 free alternatives to Amazon Neptune, checked for license, recent activity and real adoption. Each one tells you the catch, so you can switch with your eyes open.
The top-rated free, open-source replacement for Amazon Neptune is Neon Postgres (Open Source Open Source). Across this category, 2 self-hostable tools are available (including FalkorDB and Memgraph). Switching a 5-person team saves up to $1,500/year compared to Amazon Neptune's $25/mo subscription.
The catch: Community-driven open source project without dedicated enterprise SLAs.
Amazon Neptune vs Free Alternatives
Quick side-by-side comparison · $0/mo vs $25/mo
| Alternative | Type | License | Where It Runs | Stars | Head-to-Head |
|---|---|---|---|---|---|
| Neon Postgres | open source | Open Source | Local | ★ 23.3k | Amazon Neptune vs Neon Postgres → |
| OceanBase | open source | Open Source | Local | ★ 10.4k | Amazon Neptune vs OceanBase → |
| FalkorDB | open source | Open Source | Self-host | ★ 10.5k | Amazon Neptune vs FalkorDB → |
| Memgraph | open source | Open Source | Self-host | ★ 4.7k | Amazon Neptune vs Memgraph → |
The picks
4 open source · ranked by fit
- 01
Neon Postgres
open sourceOpen SourceLocal23.3knov 2026Cloud-native, auto-scaling Postgres with instant branching, bottomless storage, and pay-per-use pricing
The catch vs Amazon NeptuneCommunity-driven open source project without dedicated enterprise SLAs.
Install, platforms & data +
- platforms
- desktopcross-platformone-click install
- install
- Clone https://github.com/neondatabase/neon or deploy with Docker Compose
- setup
- Download the native package or installer for your operating system.
- your data
- All application data lives locally on your own machine.
- checked
- 2026-11-07
- 02
OceanBase
open sourceOpen SourceLocal10.4knov 2026Scalable, high-availability database system supporting OLTP, OLAP, and hybrid transactional/analytical processing workloads.
The catch vs Amazon NeptuneCommunity-driven open source project without dedicated enterprise SLAs.
Install, platforms & data +
- platforms
- desktopcross-platformone-click install
- install
- Clone https://github.com/oceanbase/oceanbase or deploy with Docker Compose
- setup
- Download the native package or installer for your operating system.
- your data
- All application data lives locally on your own machine.
- checked
- 2026-11-07
- 03
FalkorDB
open sourceOpen SourceSelf-host10.5knov 2026Graph database using sparse matrix representation and linear algebra to deliver ultra-low latency Cypher queries, native multi-tenancy, and built-in GraphRAG support for AI applications.
The catch vs Amazon NeptuneRequires self-hosting setup, updates, and server maintenance compared to managed Amazon Neptune.
Install, platforms & data +
- platforms
- webself-hosteddocker to self-host
- install
- Clone https://github.com/falkordb/falkordb or deploy with Docker Compose
- setup
- Deploy via Docker or binary release from GitHub and configure environment variables.
- your data
- All application data and configuration live on your own server or local database.
- checked
- 2026-11-07
- 04
Memgraph
open sourceOpen SourceSelf-host4.7knov 2026Memgraph is a scalable, in-memory graph database solution offering high-performance computing and Neo4j compatibility.
The catch vs Amazon NeptuneRequires self-hosting setup, updates, and server maintenance compared to managed Neo4j AuraDB.
Install, platforms & data +
- platforms
- webself-hosteddocker to self-host
- install
- Clone https://github.com/memgraph/memgraph or deploy with Docker Compose
- setup
- Deploy via Docker or binary release from GitHub and configure environment variables.
- your data
- All application data and configuration live on your own server or local database.
- checked
- 2026-11-07
Amazon Neptune Head-to-Head Comparisons (2027)
Side-by-side trade-off breakdowns · 4 free alternatives
Frequently Asked Questions
Direct answers · Amazon Neptune open-source replacements
What is the best free alternative to Amazon Neptune?+
The top free alternative to Amazon Neptune is Neon Postgres (open source, Open Source). Cloud-native, auto-scaling Postgres with instant branching, bottomless storage, and pay-per-use pricing Other popular Amazon Neptune replacements include OceanBase, FalkorDB, Memgraph.
Can I self-host a free replacement for Amazon Neptune?+
Yes. Of the 4 free alternatives to Amazon Neptune, 2 can be self-hosted on your own server or local machine: FalkorDB (Open Source), Memgraph (Open Source).
How much does switching from Amazon Neptune to a free alternative save?+
Amazon Neptune starts at $25/month per seat ($300/year). Switching a 5-person team to a free alternative like Neon Postgres saves $1,500 per year in software subscription fees.
Should I vibe-code or build my own Amazon Neptune clone from scratch?+
Our build verdict for Amazon Neptune is NO (use a free alternative, save the tokens). Instead of paying recurring SaaS fees for Amazon Neptune or rebuilding it from scratch, deploy one of the 4 battle-tested open-source alternatives like Neon Postgres.
What is the catch when switching from Amazon Neptune to Neon Postgres?+
Community-driven open source project without dedicated enterprise SLAs.
