Scalar

What Scalar does

Scalar, Inc. is a privately-held data infrastructure company developing middleware that operates across heterogeneous database systems. Founded in 2017 and headquartered in Tokyo, Japan, with the legal entity Scalar, Inc. domiciled in the USA, the company employs 11-50 people and offers two core products. ScalarDB is a universal hybrid transaction/analytical processing (HTAP) engine that runs as middleware on existing databases, virtually unifying diverse database systems (MySQL, PostgreSQL, Oracle, SQL Server, DynamoDB, Cosmos DB, Cassandra) by delivering ACID transactions and real-time analytics without requiring data migration. ScalarDL is a Byzantine-fault detection middleware that achieves tamper-evident transactional database systems through a proprietary novel consensus algorithm, with separate Ledger and Auditor components for fault detection.

The product portfolio spans ScalarDB and ScalarDL in Community (open-source), Enterprise Standard, and Enterprise Premium editions, plus clustered deployment (ScalarDB Cluster), client SDKs (Java, .NET), SQL and gRPC APIs, a JDBC driver, Spring Data JDBC integration, GraphQL interfaces, and a Schema Loader tool. In 2025, Scalar launched the ScalarDB MCP Server, a Model Context Protocol implementation that enables third-party LLMs (Claude Desktop, VS Code with Cline) to access and manage data across multiple databases through natural language queries.

Revenue is generated through annual subscription-based commercial licensing for Enterprise Standard and Premium tiers, with pricing on a quote-based (not publicly disclosed) basis, complemented by a free Community edition distributed via GitHub, Maven Central, NuGet, and Docker. The go-to-market combines enterprise field sales for commercial licenses with an API-first, developer-centric self-serve motion through open-source channels, documentation portals, and engineering content marketing (Medium, YouTube). The company has raised approximately $16M USD across three funding rounds (2018, 2020, 2022), with the largest round (~¥1.5B / ~$10.4M) in October 2022 led by SPARX Group alongside undisclosed investors. Customer segments are horizontally defined across "Enterprise Database Operators" and "Security-Conscious Enterprises," with no named customer logos publicly disclosed.

Name

Scalar

Legal name

Scalar, Inc.

Website

https://scalar-labs.com

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

11–50 employees

Short description

Scalar develops database middleware (ScalarDB HTAP engine and ScalarDL Byzantine-fault detection) that enables ACID transactions and real-time analytics across heterogeneous databases without migration, sold to enterprise database operators via annual subscription licensing and open-source community editions.

Ownership category

akta.pro rank

Product category

Distributed Database Middleware

NAICS

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182), Computer Systems Design and Related Services (54151), Custom Computer Programming Services (541511)

SIC

Services-Prepackaged Software (7372), Services-Computer Programming, Data Processing, Etc. (7370), Services-Computer Integrated Systems Design (7373)

akta.pro primary industry

Multi-Model Databases (HDAEAAAL)

akta.pro secondary industries

Database Tools & Ecosystem (Replication, Backup/Recovery, HA/DR, Monitoring) (HDAEAAAO), Data Platform (Unified Data & Analytics) Suites (HDAEABAD), Database-as-a-Service (DBaaS) Platforms (HDAEAAAN)

Keywords

• Distributed database middleware
• HTAP transaction processing
• Byzantine fault detection
• ACID cross-database transactions
• Tamper-evident database systems

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure

Revenue model

1. Software Licenses: Tiered licensing model with Community (free/open-source), Enterprise Standard, and Enterprise Premium editions. Enterprise editions require commercial license keys and provide additional features, support, and enterprise-grade capabilities.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels5 records

Core offering

Scalar develops database middleware products that enable ACID transactions, real-time analytics, and tamper-evidence across heterogeneous database systems without requiring data migration. Its core products are ScalarDB (a cross-database HTAP engine) and ScalarDL (Byzantine-fault detection middleware), delivered in open-source Community editions and commercially-licensed Enterprise Standard and Enterprise Premium editions with added support and capabilities. The company also offers clustered deployment, multiple SDKs, SQL/gRPC/JDBC/GraphQL APIs, and an MCP Server for AI-driven database access.

Product overview

Scalar is a data infrastructure company offering two core middleware products: ScalarDB and ScalarDL. ScalarDB is a universal HTAP (Hybrid Transaction/Analytical Processing) engine that enables ACID transactions and real-time analytics across heterogeneous databases. ScalarDL is Byzantine-fault detection middleware that ensures data tamper detection in transactional database systems. Both products are available in open-source Community editions and commercial Enterprise editions. The product portfolio includes clustered deployment options (ScalarDB Cluster), client SDKs (Java, .NET), SQL and gRPC APIs, and the ScalarDB MCP Server for AI-driven database operations via natural language.

Differentiator

Problem solved

Functional benefit

Brands

• ScalarDB: Cross-database HTAP engine that achieves ACID transactions and real-time analytics across diverse databases
• ScalarDL
• ScalarDB Cluster
• ScalarDB Analytics
• ScalarDB MCP Server

Products and services

• ScalarDB A universal hybrid transaction/analytical processing (HTAP) engine that runs as middleware on databases and virtually unifies diverse databases by achieving ACID transactions and real-time analytics across them to simplify managing multiple databases. Targeted at enterprises operating multiple heterogeneous database systems. Available in Community (open-source), Enterprise Standard, and Enterprise Premium editions.
• ScalarDL Scalable and practical Byzantine-fault detection middleware for transactional database systems that achieves correctness, scalability, and database agnosticism through a novel consensus algorithm. Provides tamper-evidence to detect arbitrary faults such as data tampering and malicious attacks. Targeted at security-conscious enterprises requiring data integrity guarantees. Available in Community and Enterprise editions.
• ScalarDB Cluster Enterprise-grade clustered deployment of ScalarDB providing SQL interface, distributed transaction support, and high availability for production environments. Available in Enterprise Standard and Enterprise Premium editions with commercial licensing required.
• ScalarDB MCP Server Model Context Protocol (MCP) implementation that enables LLMs to access and manage data through ScalarDB using natural language queries. Works with both ScalarDB Cluster (SQL mode) and ScalarDB Core (CRUD mode), allowing AI-driven database operations across heterogeneous databases.

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

AI capability3 records

Feature6 records

Partnerships

Two partnerships are on record, tiered core.

• Botswana Innovation Fund (BIF)coreStrategic or Co-development Partner · 10 March 2026BIF partnered with Scalar Energy Africa to launch a pioneering business programme in Gaborone, Botswana to accelerate climate and digital technology startups across Southern Africa. The initiative is backed by a public-private partnership with two government ministries.
• Scalar Energy AfricacoreStrategic or Co-development Partner · 10 March 2026Partnership with BIF to deliver a climate and digital technology startup acceleration programme in Southern Africa, providing mentorship, technical support, funding opportunities, and access to industry networks.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• PingCAP (TiDB): TiDB is an open-source HTAP distributed SQL database combining OLTP and OLAP workloads. It overlaps directly with ScalarDB's HTAP value proposition and competes for the same enterprise HTAP buyer.
• SingleStore (MemSQL): SingleStore is a distributed HTAP database supporting both transactional and analytical workloads at scale. It is directly comparable to ScalarDB's HTAP engine, though delivered as a unified database rather than middleware.
• Yugabyte: YugabyteDB is an open-source distributed SQL database offering PostgreSQL-compatible APIs with strong consistency and geo-distribution. It competes with ScalarDB for cloud-native, distributed transactional workloads.
• Cockroach Labs: CockroachDB delivers distributed SQL with ACID guarantees across geo-distributed deployments. It is the most direct competitor to ScalarDB in the distributed transactional database category, though CockroachDB replaces rather than federates underlying stores.

Broad incumbents

• Oracle: Oracle provides enterprise-grade distributed database systems (Oracle Database, MySQL HeatWave, GoldenGate federation) and is explicitly supported by ScalarDB as an underlying store. Oracle competes both directly and indirectly as an incumbent in the federated-data management category.
• MongoDB: MongoDB is a leading multi-model document database with its own distributed transaction and analytics capabilities. It serves the same enterprise multi-database buyers as Scalar but as a single-vendor solution rather than a federating middleware layer.
• Amazon Web Services: AWS offers Aurora, DynamoDB, and cross-database analytics services that compete with ScalarDB's federated HTAP positioning, and hosts ScalarDB Cluster deployments via EKS. AWS is both an underlying cloud platform and a competitor.
• Snowflake: Snowflake is a cloud data platform providing analytics across multiple data sources with strong data sharing capabilities. Its data sharing/marketplace functionality overlaps with ScalarDB Analytics in serving federated enterprise data use cases.

Emerging players

• EdgeDB: EdgeDB is an emerging open-source graph-relational database emphasizing developer experience and strong typing. It targets the same developer-first adoption funnel that Scalar uses for its open-source Community edition.
• Fauna: Fauna is a distributed document-relational database with transactional consistency and global scale. It targets similar cloud-native application developers as ScalarDB Community edition but with a single-database architecture.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/scalar_labs
• GitHubgithub.com/scalar-labs
• YouTubeyoutube.com/@scalar-labs
• LinkedInlinkedin.com/company/scalarlabs

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds3 records

Investors12 records

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 Scalar