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@HarperFast

Harper

A Node.js performance platform that unifies database, cache, application, and messaging layers into one in-memory process. Build faster. Scale globally.
README.md
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Harper is an open-source Node.js platform that merges your database, cache, app logic, and messaging into a single in-memory runtime. It looks like a distributed system, but feels as simple as running one service — making it the easiest way to ship fast, data-intensive, real-time, globally scaled applications.

The typical journey is: develop locally with Harper, then deploy and operate globally on Harper Fabric.

Key resources

Community

  • Discord – Chat with the team and community, ask questions, and share what you’re building.

  • YouTube – Deep dives, Harper Learn episodes, and live coding sessions.

Contributing

We welcome issues and PRs in the core Harper repo and across the ecosystem.

Open Source vs Source Available

At Harper, we take special care to distinguish between open source and source available software.

Open source software must be licensed under an OSI-approved license (we use Apache 2.0 as the default), allowing anyone to use, modify, and distribute the software freely. The core, @HarperFast/Harper repo is open source along with many additional Harper plugins, applications, examples, tooling, and more.

Source available software, on the other hand, allows users to view the source code but may have restrictions on its use, modification, or distribution. By default, we use the Elastic License 2.0 for source available projects. Certain Harper products, such as the Harper Replication Plugin and Harper Fabric will be made source available in the future. While a majority of our projects are open source, always pay special attention to the license within any repository or distribution to understand the specific terms and conditions that apply.

For more information on licensing read our Licensing FAQ

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Repositories

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    TypeScript 4 Apache-2.0 3 1 0 Updated Jan 9, 2026
  • oauth Public

    A Harper plugin for OAuth 2.0 and OpenID Connect authentication with multi-provider support.

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    JavaScript 1 Apache-2.0 1 0 0 Updated Jan 9, 2026
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    JavaScript 1 Apache-2.0 0 3 0 Updated Jan 9, 2026
  • edge-ai-ops Public

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    JavaScript 1 Apache-2.0 2 0 0 Updated Jan 9, 2026
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    Documentation for Harper

    HarperFast/documentation’s past year of commit activity
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    RocksDB binding for Node.js

    HarperFast/rocksdb-js’s past year of commit activity
    C++ 3 Apache-2.0 0 25 1 Updated Jan 9, 2026
  • realtime-pubsub-example Public

    This shows how to use realtime pubsub with MQTT, Websockets, SSE, and HTTP Rest in both python and JS.

    HarperFast/realtime-pubsub-example’s past year of commit activity
    Vue 0 Apache-2.0 0 0 0 Updated Jan 9, 2026
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    Builds & packages Datadog-agent binaries as NPM packages so they can be used in Harper components

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