Neosync – Open-Source Data Anonymization for Postgres and MySQL
Hey HN, we're Evis and Nick and we're excited to be launching Neosync (https://www.github.com/nucleuscloud/neosync). Neosync is an open source platform that helps developers anonymize production data, generate synthetic data and sync it across their environments for better testing, debugging and developer experience. Most developers and teams have some version of a database seed script that creates some mock data for their local and stage databases. The problem is that production data is messy and it’s very difficult to replicate that with mock data. This causes two big…
Neosync – Open-Source Data Anonymization for Postgres and MySQL launched on May 22, 2024 with 246 votes, #190 of 4,539 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 2 years on.
In plain words
Neosync is an open-source platform for developers working with Postgres and MySQL databases. It anonymizes production data, generates synthetic data, and syncs it across development environments to enable more realistic testing and debugging. The tool addresses the gap between mock seed data and actual production data, helping developers catch bugs earlier and replicate real-world scenarios during local development and staging.
written from the facts on this page · September 2026
From the sources
Open Source Data Security Platform for Developers to Monitor and Detect PII, Anonymize Production Data and Sync it across environments. - GitHub - nucleuscloud/neosync: Open Source Data Security Platform for Developers to Monitor and Detect PII, Anonymize Production Data and Sync it across environments.
In the maker’s words, at launch
Hey HN, we're Evis and Nick and we're excited to be launching Neosync (https://www.github.com/nucleuscloud/neosync). Neosync is an open source platform that helps developers anonymize production data, generate synthetic data and sync it across their environments for better testing, debugging and…
Does a similar job
all alternatives →
Open-Source Data Replication and Anonymization2023 · github.com · ▲24Hey HN, we're Evis and Nick, we're excited to be launching Neosync on HN! Neosync is an open source data replication and anonymization project that helps developers create safe, anonymized test data and sync it across all environments for high-quality local, stage and CI testing. This is how it works: 1. You select a job type. Today we support data sync jobs (these sync data between two databases and run on a schedule you define) and a data generation job (this generates synthetic data from scratch and sends it to a destination). 2. Next you define your source database and a destination(s)…
- OSOpen-Source Data Anonymization for Developers2024 · docs.neosync.dev · ▲13
Hey HN, we're Evis and Nick from Neosync (https://www.github.com/nucleuscloud/neosync). Since we last introduced Neosync on HN 4 months ago, we’ve made a lot of progress and we’re excited to be launching several new features. As a reminder, Neosync is an open source platform that helps developers anonymize production data, generate synthetic data, subset it and sync it across their environments for better testing, debugging and developer experience. We do all of this while handling referential integrity. Whether you have primary keys, foreign keys, unique constraints,…
- ATA tool to seed your dev database with real data2022 · ▲129
A bunch of developers and myself have created RepliByte - an open-source tool to seed a development database from a production database. Features: - Support data backup and restore for PostgreSQL, MySQL and MongoDB - Replace sensitive data with fake data - Works on large database (> 10GB) (read Design) - Database Subsetting: Scale down a production database to a more reasonable size - Start a local database with the prod data in a single command - On-the-fly data (de)compression (Zlib) - On-the-fly data de/encryption (AES-256) - Fully stateless (no server, no daemon) and lightweight…
Bi-directional sync between Postgres and SQLite2023 · powersync.com · ▲356Hi HN, Today we’re launching PowerSync, a Postgres<>SQLite bi-directional sync engine that enables an offline-first app architecture. It currently supports Flutter, React Native and web (JavaScript) using Wasm SQLite in the browser, with more client SDKs on the way. Conrad and I (Ralf) have been working on our sync engine since 2009, originally as part of a full-stack app platform. That version of the system is still used in production worldwide and we’ve learnt a lot from its use cases and scaling. About a year ago we started on spinning off PowerSync as a standalone product that is…
Pg_replicate – Build Postgres replication applications in Rust2024 · github.com · ▲216A high-performance Postgres replication engine written in Rust. Embed it in your Rust application or run it as a standalone binary. - supabase/etl
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Source: Show HN post ↗ · launch text quoted in part
