Harper.Fast
Open-source Node.js platform running in-memory database, cache, app logic, and messaging in a unified runtime, offering declarative GraphQL schemas, auto-generated REST APIs, custom JavaScript extensions, real-time protocols, rapid global deployment, and free tier.
Cost / License
- Freemium (Subscription)
- Open Source (Apache-2.0)
Application type
Platforms
- Online
- Self-Hosted
Features
Properties
- Lightweight
Features
- Command line interface
- Extensible by Plugins/Extensions
- Ad-free
Git Support- Rad
- MQTT
- REST API
- Vector Database
- Cloud Hosting
Harper.Fast News & Activities
Recent activities
- Danilo_Venom updated Harper.Fast
- CompostableMe added Harper.Fast
CompostableMe added Harper.Fast as alternative to Firebase, Supabase, Appwrite and Nhost
Harper.Fast information
Developed by
HarperDB Licensing
Open Source (Apache-2.0) and Freemium product.Pricing
Subscription that costs up to $45000 per month + free version with limited functionality.Written in
Alternatives
6 alternatives listedSupported Languages
- English
AlternativeTo Categories
Development, Online Services, OS & UtilitiesGitHub repository
- 67 Stars
- 5 Forks
- 82 Open Issues
- Updated
What is Harper.Fast?
Harper is an open-source Node.js performance platform that fuses database, cache, application hosting, and messaging into one in-memory process. Instead of wiring together separate services for your database, API layer, caching, and real-time messaging, Harper runs everything in a single runtime with shared memory, delivering microsecond-level data access and eliminating the latency, complexity, and configuration overhead of multi-service architectures.
Define your data schema in GraphQL and Harper instantly generates full REST APIs, no controllers, no routes, no ORM. Extend with custom JavaScript resources for application logic. Built-in real-time messaging supports WebSockets, MQTT, and Server-Sent Events without external brokers.
Deploy globally with Harper Fabric, which distributes workloads across multiple nodes by selecting your regions and latency targets. Scaffold a new project in seconds with npm create harper@latest
Harper is used in production by enterprise organizations including Fortune 500 retailers, delivering sub-millisecond response times at scale. It is particularly well-suited for AI-assisted development and agentic engineering, since the entire application definition fits in a few declarative files rather than dozens of infrastructure configurations.
Open source under the Apache 2.0 license. Free tier available with no credit card required.