head to head · open source
realtime vs olake
realtime has 7,675 GitHub stars, 479 forks, 78 open issues and last shipped yesterday. olake has 1,576 stars, 273 forks, 178 open issues and last shipped 2 days ago. realtime leads on adoption by 387% (7,675 vs 1,576 stars). realtime is written in Elixir under Apache-2.0; olake is written in Go under Apache-2.0. realtime has attracted 6% as many forks as stars, olake 17%. realtime was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (cdc, change-data-capture), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| realtime | olake | |
|---|---|---|
| GitHub stars | ★ 7.7K | ★ 1.6K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Elixir | Go |
| Last push | 2026-11-04 | 2026-11-03 |
| Forks | ⑂ 479 | ⑂ 273 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick realtime if
- You weight community size — 7.7K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Elixir
- You value the larger contributor base for long-term maintenance
pick olake if
- You want the olake feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and olake fits your workflow better
About realtime
Supabase Realtime Send ephemeral messages, track and synchronize shared state, and listen to Postgres changes all over WebSockets. Examples · Request Features · Report Bugs Status This repository focuses on version 2 but you can still access the previous version's code and Docker image. For the latest Docker images go to The codebase is under heavy development and the documentation is constantly evolving. Give it a try and let us know what you think by creating an issue. Watch releases of this repo to get notified of updates. And give us a star if you like it! Overview What is this? This is a server built with…
read the full realtime overview →
About olake
OLake Go OLake Go is a high performance, open source data ingestion engine for replicating databases, S3, and Kafka into Apache Iceberg (or plain Parquet). Built for scalable, real time pipelines, OLake Go provides a simple web UI and CLI used to ingest into vendor lock in free Iceberg tables supporting all the query engines/warehouses. Read the docs and benchmarks at olake.io/docs . Join our active community on Slack . [!NOTE] 🎉 OLake Fusion is now live! — Automate your Apache Iceberg Table Maintenance. Check it out here → github.com/datazip inc/olake fusion 🎉 OLake Go — Super fast Sync to Apache Iceberg…
read the full olake overview →
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Frequently asked questions
Is realtime or olake more popular?
realtime has 7,675 GitHub stars and olake has 1,576. realtime has the larger community by that measure.
Are realtime and olake free?
Both are open source. realtime is licensed under Apache-2.0 and olake under Apache-2.0. Neither carries a licence fee.
What is the difference between realtime and olake?
realtime is written in Elixir and olake in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, realtime or olake?
Choose realtime if you want the larger community (7,675 stars) or its Apache-2.0 licence terms. Choose olake if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.