Life & fun · alternatives · 2026
24 alternatives to Simperium, a realtime data layer
Simperium is a cross-platform data sync service.
Simperium is a cross-platform data sync service that keeps application data synchronized across devices in real time. It handles data storage and synchronization for apps and services, ensuring information stays… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Simperium, a realtime data layer launched in 2012; newer entries below may have overtaken it.
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Simperium▲93Service for developers to move data everywhere it's needed
2014 · simperium.com · its alternatives →
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Simpl.▲330A pleasant Postgres browser for working with real data
Jan 2026 · simpl.sh · its alternatives →
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I launched NumPad v1 on here a few years ago, and back then it wasn't much more than a thin CodeMirror wrapper around the calculator engine I'd written. Now I've rewritten it as a PWA that supports multiple documents, persists them to IndexedDB, and has a syncing service for paying customers. Syncing is handled by Automerge[1] under the hood, which should make it relatively easy to get document sharing working too. [1] https://automerge.org/
2022 · numpad.io · its alternatives →
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Hi HN, James, Valter, Sam and the team from ElectricSQL here. We're really excited to be sharing ElectricSQL with you today. It's an open source, local-first sync layer that can be used to build reactive, realtime, offline-capable apps directly on Postgres with two way active-active sync to SQLite (including with WASM in the browser). Electric comprises a sync layer (built with Elixir) placed in front of your Postgres database and a type safe client that allows you to bidirectionally sync data from your Postgres to local SQLite databases. This sync is CRDT-based, resilient to conflicting…
2023 · electric-sql.com · its alternatives →
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Coupler.io▲150Sync apps with Google Sheets on schedule, no coding required
2021 · coupler.io · its alternatives →
- 8MD
Hey HN, I’m an engineer at Supabase [0] and one of the creators of this demo. My team and I have been working hard to bring developers the next version of Supabase Realtime. The current version of Realtime [1] is a Change Data Capture (CDC) server for a PostgreSQL database that broadcasts changes via WebSockets to authorized subscribers. It’s written in Elixir/Phoenix. The server utilizes PostgreSQL’s logical replication functionality, which writes database changes to Write-Ahead Logging (WAL) segment files, and a replication slot, responsible for managing and retaining WAL files.…
2022 · multiplayer.dev · its alternatives →
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Coupler.io▲93Pull your data from various apps straight to Google Sheets!
2020 · coupler.io · its alternatives →
- 12SJ
2015 · 0x8890.github.io · its alternatives →
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SyncedStore is a library for building distributed, real-time collaborative web applications that sync automatically. This used to be quite complex, but with SyncedStore it's as easy as sharing a pie!
2021 · syncedstore.org · its alternatives →
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SlothTracker is a cross platform time tracking application for Windows, Mac and Linux with a focus on data privacy and keyboard heavy workflow.
2020 · royalsloth.eu · its alternatives →
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PieSync▲89Seamless two-way sync between your CRM, Google Apps & more
2015 · piesync.com · its alternatives →
- 17SA
Yes, Python. I can already hear the screams from the rafters telling me how terrible of a choice Python is - but in my case, I valued modularity, extensibility, hackability over raw performance. (It was also a challenge to myself to see how far I can get without referencing existing implementations) Synchrotron processes nodes: simple Python classes with typed I/O and a render() method for processing. It can be as concise as 5 lines: class IncrementNode(Node): input: StreamInput output: StreamOutput def render(self, ctx): self.out.write(self.a.read(ctx) + 1) Nodes can then be spawned…
2025 · synchrotron.thatother.dev · its alternatives →
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Build real-time apps without maintaining the infrastructure
2017 · its alternatives →
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A flexible GraphQL client and server library that can be used to power realtime applications. - tjmehta/primus-graphql
2018 · github.com · its alternatives →
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Hello HN! Keeping Elasticsearch or Algolia in sync with Postgres is a pain when your data spans multiple tables. Traditional CDC tools like Debezium capture table-level events but don’t help when you need to index a full entity composed of related records. That's why I built PG-Capture. PG-Capture lets you define a schema as complex as you need, aggregate table-level events, and reconstruct structured objects spanning multiple tables. It then publishes them as meaningful domain-level events to any queue (RabbitMQ, SQS, etc.). PG-Capture does NOT replace Debezium, it works on top of it (or…
2025 · pg-capture.onrender.com · its alternatives →
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Hamoni Sync▲20Real-time application state/data synchronisation
2018 · hamoni.tech · its alternatives →
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Simpluna▲68I've been running Simpluna, a period-tracking app, for six years. It's a company based in Tokyo, Japan, but development and operations are basically a one-person effort. The app is built with React Native (Expo). The defining trait of the app is that it's simple, with no unnecessary features. Recording periods, calculating predictions, and sending notifications — that's the core of it. This space is dominated by big players (Flo, Clue, and in Japan, Luna Luna). Building something similar would have been hopeless, so I made the things those apps don't have my selling point. Optional features…
2021 · simpluna.app · its alternatives →
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Hi HN, We have been building SyncLite, an open-source platform to simplify offline-first application development. If your application uses SQLite or DuckDB, SyncLite lets it continue using the local database as usual while synchronization happens in the background. For SQL-based applications, SyncLite records transactions into transactionally consistent .sqlog files using SQLite as an open replication format. A background consolidator replays those transactions, derives row-level CDC and schema changes, and applies them transactionally to destination databases like PostgreSQL. The same…
2024 · github.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →