What Rocicorp does

Rocicorp, LLC is a small, privately-held developer-tools company founded in 2019 by a group of senior engineers who previously worked together for fifteen years in Silicon Valley on Google Chrome, Gmail, and Twitter. The company builds JavaScript and TypeScript frameworks that address hard problems in web application development: offline-capable data layers, real-time collaborative state, and sub-millisecond query synchronization. Its two active products are Replicache, a framework for building offline-capable collaborative web apps, and Zero, a general-purpose web sync engine that claims 99% of queries complete in zero milliseconds. A third product, Reflect, a 120FPS multiplayer sync solution with server authority, has been deprecated and consolidated out of the active portfolio.

The company operates as a fully distributed organization with seven named partners and associate partners spanning twelve time zones globally, deliberately rejecting rocketship-growth norms in favor of long-term sustainability and work-life balance. Its go-to-market is product-led: Replicache and Zero are distributed as open-source packages on npm and GitHub, allowing web developers to self-serve, evaluate, and integrate without sales intervention. Revenue is generated through software licensing (described as subscription/recurring) sold at a 'fair price,' though specific pricing tiers are not publicly disclosed. The investor base consists of a tight cluster of tech angels — Elad Gil, Bryan Baum, and Dylan Field (founder of Figma) — rather than institutional venture capital, reinforcing the company's small-scale, independent posture.

The target customer is the professional web developer building modern web applications that require offline functionality, real-time collaboration, or high-performance data synchronization. Segmentation is horizontal, and there are no named enterprise customers or anchor logos in the available data, consistent with the long-tail PLG distribution model.

Name

Rocicorp

Legal name

Rocicorp, LLC

Website

https://rocicorp.dev

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

1–10 employees

Short description

Rocicorp, LLC is a small, distributed developer-tools company that builds open-source JavaScript frameworks — Replicache and Zero — for offline-capable, real-time synchronized web applications, targeting professional web developers via a product-led, self-serve distribution model.

Ownership category

akta.pro rank

Product category

Web Developer Tools

NAICS

Software Publishers (5132)

SIC

Services-Prepackaged Software (7372)

akta.pro primary industry

Low-Code/No-Code Application Platforms (HDAEAKAA)

akta.pro secondary industry

Platform Engineering & Internal Developer Platforms (IDP) (BPAEAKAC)

Keywords

• Web development frameworks
• Data synchronization
• Offline-first apps
• Real-time collaboration
• JavaScript developer tools

Headquarters

HQ city

Kailua

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Operations

Revenue model

1. Software Licensing: The company sells high-quality software at fair prices. Products are available as open-source frameworks with commercial licensing options for enterprise use.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Rocicorp develops and sells open-source JavaScript/TypeScript frameworks that enable web developers to build high-performance, offline-capable, collaborative web applications. Its core products include Replicache, a reactive data sync framework for offline-capable collaborative apps, and Zero, a general-purpose web synchronization engine that completes 99% of queries in zero milliseconds. The company distributes the frameworks via npm and GitHub under an open-source model with commercial licensing for production use.

Product overview

Rocicorp offers a portfolio of developer-focused JavaScript tools and frameworks for building modern web applications. The core products include Replicache (a JS framework for offline-capable collaborative web apps) and Zero (a general-purpose sync solution delivering sub-millisecond query performance). Reflect, which provided high-performance multiplayer sync capabilities with 120FPS support and server authority, has been deprecated. These products are sold as independent tools that help web developers build better, more performant software.

Differentiator

Problem solved

Functional benefit

Brands

• Replicache: JS framework for building high-performance, offline-capable, collaborative web apps.
• Zero
• Reflect

Products and services

• Replicache JavaScript framework for building high-performance, offline-capable, collaborative web applications with reactive data synchronization between client and server. Targeted at professional web developers and engineering teams building modern collaborative web apps.
• Zero General-purpose synchronization solution for the web, claiming 99% of queries complete in zero milliseconds. Provides near-instantaneous data synchronization for web applications requiring high-performance data access. Targeted at web developers building real-time, performance-sensitive web applications.

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators1 record

Recent moves5 records

Expansion highlights4 records

Direct peers

• Supabase: Open-source Firebase alternative offering Postgres database, auth, storage, and real-time sync. Most directly comparable to Rocicorp in the JS sync/offline-first space, with a similar open-source PLG GTM.
• Convex: Backend platform with real-time sync and TypeScript-first developer experience. Directly comparable to Zero and Replicache in offering reactive, document-based sync for web applications.
• RxDB: Offline-first reactive database for JavaScript with sync to any backend. A direct technical peer to Replicache in the JS offline-first / sync layer category.

Broad incumbents

• Firebase: Google's backend-as-a-service platform with Firestore real-time sync, offline support, and auth. The dominant incumbent whose capabilities Rocicorp's sync engines directly compete against.
• Hasura: GraphQL data access layer with real-time subscriptions. A broader backend incumbent whose real-time capabilities overlap with Rocicorp's sync products.
• AWS AppSync: Managed GraphQL service from AWS offering real-time data sync. A hyperscaler incumbent competing in the same real-time sync category as Zero and Replicache.

Emerging players

• PowerSync: Sync engine that keeps Postgres-backed data in sync with local SQLite for offline-first apps. Comparable to Zero/Replicache as a specialized real-time sync solution targeting web and mobile developers.
• Electric SQL: Open-source sync engine for Postgres to local apps. Directly comparable technical approach to Rocicorp's sync tooling, focused on active-active replication for web and mobile.
• PartyKit: Edge platform for building real-time, multiplayer applications with JS. A focused emerging player in the real-time collaborative web space that overlaps with Rocicorp's product positioning.
• Tigris: Developer data platform offering real-time data APIs and sync. A smaller peer competing in the same real-time data infrastructure category for web developers.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks4 records

Key highlights5 records

Customer concentration

• Xx.com/rocicorp
• GitHubgithub.com/rocicorp
• LinkedInlinkedin.com/company/rocicorp

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Rocicorp