# 4 Best Open Source Alternatives for Amazon Neptune

Canonical: https://caniforkit.com/amazon-neptune
Last updated: 2026-11-07

Looking for the best open source alternative for Amazon Neptune? Compare 4 verified free and open source alternatives to Amazon Neptune (Neon Postgres, OceanBase, FalkorDB) with license details, self-hosting requirements, and practical trade-offs.

## Amazon Neptune Overview & Subscription Cost
- **Product**: Amazon Neptune
- **Category**: [databases](https://caniforkit.com/category/databases)
- **Paid Subscription Price**: $25/month per seat
- **1-Seat Annualized Cost**: $300/year
- **5-Person Team Annualized Cost**: $1,500/year
- **10-Person Team Annualized Cost**: $3,000/year
- **Can I Vibe-Code / Rebuild It Myself?**: NO (use a free alternative, save the tokens)
- **Rebuild Verdict**: 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.

## Verified Free & Open Source Alternatives

| Alternative | Type | License | Runs On | GitHub Stars | Head-to-Head |
| --- | --- | --- | --- | --- | --- |
| [Neon Postgres](https://caniforkit.com/fork/neon-postgres) | Open Source | Open Source | Local | ★ 23.3k | [Compare vs Amazon Neptune](https://caniforkit.com/vs/amazon-neptune-vs-neon-postgres) |
| [OceanBase](https://caniforkit.com/fork/oceanbase) | Open Source | Open Source | Local | ★ 10.4k | [Compare vs Amazon Neptune](https://caniforkit.com/vs/amazon-neptune-vs-oceanbase) |
| [FalkorDB](https://caniforkit.com/fork/falkordb) | Open Source | Open Source | Self-host | ★ 10.5k | [Compare vs Amazon Neptune](https://caniforkit.com/vs/amazon-neptune-vs-falkordb) |
| [Memgraph](https://caniforkit.com/fork/memgraph) | Open Source | Open Source | Self-host | ★ 4.7k | [Compare vs Amazon Neptune](https://caniforkit.com/vs/amazon-neptune-vs-memgraph) |

## In-Depth Alternative Profiles

### Neon Postgres
- **Fork Page**: [Neon Postgres Profile](https://caniforkit.com/fork/neon-postgres)
- **Head-to-Head Comparison**: [Amazon Neptune vs Neon Postgres](https://caniforkit.com/vs/amazon-neptune-vs-neon-postgres)
- **Official Website**: https://neon.com
- **Source Code Repository**: https://github.com/neondatabase/neon
- **License**: Open Source
- **Runs On**: Local
- **GitHub Stars**: 23.3k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: desktop, cross-platform, one-click install
- **Summary**: Cloud-native, auto-scaling Postgres with instant branching, bottomless storage, and pay-per-use pricing
- **The Catch vs Amazon Neptune**: Community-driven open source project without dedicated enterprise SLAs.
- **Installation**: Clone https://github.com/neondatabase/neon or deploy with Docker Compose
- **Setup**: Download the native package or installer for your operating system.
- **Data Storage**: All application data lives locally on your own machine.

### OceanBase
- **Fork Page**: [OceanBase Profile](https://caniforkit.com/fork/oceanbase)
- **Head-to-Head Comparison**: [Amazon Neptune vs OceanBase](https://caniforkit.com/vs/amazon-neptune-vs-oceanbase)
- **Official Website**: https://en.oceanbase.com/
- **Source Code Repository**: https://github.com/oceanbase/oceanbase
- **License**: Open Source
- **Runs On**: Local
- **GitHub Stars**: 10.4k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: desktop, cross-platform, one-click install
- **Summary**: Scalable, high-availability database system supporting OLTP, OLAP, and hybrid transactional/analytical processing workloads.
- **The Catch vs Amazon Neptune**: Community-driven open source project without dedicated enterprise SLAs.
- **Installation**: Clone https://github.com/oceanbase/oceanbase or deploy with Docker Compose
- **Setup**: Download the native package or installer for your operating system.
- **Data Storage**: All application data lives locally on your own machine.

### FalkorDB
- **Fork Page**: [FalkorDB Profile](https://caniforkit.com/fork/falkordb)
- **Head-to-Head Comparison**: [Amazon Neptune vs FalkorDB](https://caniforkit.com/vs/amazon-neptune-vs-falkordb)
- **Official Website**: https://www.falkordb.com/
- **Source Code Repository**: https://github.com/falkordb/falkordb
- **License**: Open Source
- **Runs On**: Self-host
- **GitHub Stars**: 10.5k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: Graph 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 Neptune**: Requires self-hosting setup, updates, and server maintenance compared to managed Amazon Neptune.
- **Installation**: Clone https://github.com/falkordb/falkordb or deploy with Docker Compose
- **Setup**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **Data Storage**: All application data and configuration live on your own server or local database.

### Memgraph
- **Fork Page**: [Memgraph Profile](https://caniforkit.com/fork/memgraph)
- **Head-to-Head Comparison**: [Amazon Neptune vs Memgraph](https://caniforkit.com/vs/amazon-neptune-vs-memgraph)
- **Official Website**: https://memgraph.com
- **Source Code Repository**: https://github.com/memgraph/memgraph
- **License**: Open Source
- **Runs On**: Self-host
- **GitHub Stars**: 4.7k
- **Maintenance Activity**: nov 2026
- **Supported Platforms**: web, self-hosted, docker to self-host
- **Summary**: Memgraph is a scalable, in-memory graph database solution offering high-performance computing and Neo4j compatibility.
- **The Catch vs Amazon Neptune**: Requires self-hosting setup, updates, and server maintenance compared to managed Neo4j AuraDB.
- **Installation**: Clone https://github.com/memgraph/memgraph or deploy with Docker Compose
- **Setup**: Deploy via Docker or binary release from GitHub and configure environment variables.
- **Data Storage**: All application data and configuration live on your own server or local database.

## Frequently Asked Questions

### 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.

### 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.

### What is the catch when switching away from Amazon Neptune?
While Neon Postgres replaces core Amazon Neptune features without subscription fees, the real-world trade-off is: Community-driven open source project without dedicated enterprise SLAs.

## Related

- [databases Software Category Hub](https://caniforkit.com/category/databases)
- [All Paid SaaS Alternatives Index](https://caniforkit.com/alternatives)
- [Self-Hosted Software Directory](https://caniforkit.com/self-hosted)
- [Homepage](https://caniforkit.com)