What SlingData.io does

SlingData.io, operated by Sling Data Labs LLC and headquartered in Boca Raton, Florida, develops Sling, an open-source ELT (Extract, Load, Transform) data integration platform aimed at data engineers and engineering teams. The flagship product, Sling CLI, is a free, AGPL-3.0-licensed command-line tool with a core engine written in Go using a streaming architecture designed to minimize in-memory footprint. The CLI supports over 40 native connectors spanning databases (PostgreSQL, MySQL, Oracle, Snowflake, BigQuery, Redshift, ClickHouse, DuckDB, MongoDB, Trino, Databricks, and others), file and object storage (AWS S3, Azure Blob, Google Cloud Storage, SFTP, FTP), and pre-built API specs (HubSpot, Stripe, GitHub, Gmail, Airtable, Cloudflare Analytics), with replication defined declaratively in YAML.

The product line extends beyond the free CLI into paid subscription tiers — CLI Pro at $79/month and CLI Pro Max at $149/month — that unlock advanced features including API source extraction, parallel streams with automatic retries, ODBC connections, OpenTelemetry logging, change data capture (CDC) via database transaction logs, and schema migration that transfers primary keys, foreign keys, indexes, and constraints. The Sling Data Platform (web-based) is offered at $99/month (Standard) and $249/month (Advanced), adding a built-in IDE, alerting via email, Slack, and Microsoft Teams, agent-based execution, observability/monitoring with z-score anomaly detection, Git integration with GitHub, GitLab, and Bitbucket, user roles, audit logs, and self-hosting via Docker or Kubernetes. A REST API at api.slingdata.io enables programmatic connection, job, and execution management.

The company operates a product-led growth (PLG) model: developers install the free CLI via direct download, Homebrew, Scoop, Docker, or pip, experience the core value proposition without friction, and upgrade to paid tiers for advanced capabilities. Distribution is global and self-service, with no enterprise sales motion indicated beyond the self-hosted deployment option. Sling is bootstrapped, with no external funding disclosed, and reaches customers through documentation, a blog, GitHub, Discord, VS Code extension, and organic social channels. Notable adoption signals include incorporation of Sling by Dagster as embedded ELT functionality, and testimonial coverage from individual practitioners and small engineering teams rather than named enterprise accounts.

Name

SlingData.io

Legal name

Sling Data Labs LLC

Website

https://slingdata.io

Company type

Private

Founded year

2022

Operating status

Operating

Headcount range

1–10 employees

Short description

SlingData.io (Sling Data Labs LLC) builds Sling, an open-source Go-based ELT CLI and web platform for data engineers, offering 40+ database, file, and API connectors. Revenue comes from freemium subscription tiers ($79-$249/month) driving developer-led adoption across the modern data stack.

Ownership category

akta.pro rank

Product category

Data Integration / ELT Software

NAICS

Computer Systems Design and Related Services (5415), Computer Systems Design and Related Services (54151)

SIC

Services-Prepackaged Software (7372), Services-Computer Integrated Systems Design (7373)

akta.pro primary industry

Connector/Adapter Frameworks & Integration Runtimes (HDAEACAJ)

akta.pro secondary industry

Enterprise Service Bus (ESB) & Message-Oriented Middleware (HDAEACAE)

Keywords

• Data integration software
• ELT platform
• Database replication tools
• Open source CLI
• Data pipeline automation

Headquarters

HQ city

Boca Raton

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Free CLI: The Sling CLI is provided free of charge under AGPL-3.0 open-source license. It includes basic data integration capabilities, local processing, command-line operations, and community support. This serves as a free tier that drives product adoption and top-of-funnel conversion.
2. CLI Pro Subscription: Paid subscription providing advanced CLI features including API Sources, Pipelines & Hooks, Staged Transforms, State-Based Incremental, ODBC Connections, Parallel Streams, and OpenTelemetry Logging. CLI Pro priced at $79/month (monthly) or $72/month (yearly).
3. CLI Pro Max Subscription: Premium CLI tier including everything in CLI Pro plus Change Data Capture (CDC), Schema Migration, and Priority Support. CLI Pro Max priced at $149/month (monthly) or $137/month (yearly).
4. Sling Data Platform - Standard Plan: Web-based platform with features including Smart Editor (IDE), Alerting (Email, Slack, MS Teams), API Sources, Parallel Streams & Retries, Stream Chunking, Capture Deletes, Transforms, Pipelines & Hooks, OpenTelemetry Logging, and Production Agents. Priced at $99/month (monthly) or $91/month (yearly).
5. Sling Data Platform - Advanced Plan: Enterprise-grade platform including everything in Standard plus Platform Self-Hosting, Git Integration, Change Data Capture (CDC), Schema Migration, User Roles, Audit Logs, Observability/Monitoring, Priority Support, and Premium Support. Priced at $249/month (monthly) or $228/month (yearly).

Pricing tiers

Go-to-market motion1 record

Distribution channels7 records

Marketing channels8 records

Core offering

SlingData.io provides a free, open-source CLI (Sling CLI) written in Go for ELT data integration across 40+ databases, file systems, and APIs, with YAML-based replication configurations and streaming architecture for memory efficiency. The company also offers a commercial Sling Data Platform—a web-based solution with scheduling, monitoring, alerting, Git integration, Change Data Capture, schema migration, and self-hosting—available via paid subscription tiers. Together, these offerings enable developers and data teams to replace hand-rolled scripts and expensive SaaS ELT tools with a unified, code-first data integration solution.

Product overview

SlingData.io offers an open-source ELT CLI (Sling CLI) as its core free product, with subscription tiers (CLI Pro and CLI Pro Max) adding advanced features like API sources, CDC, schema migration, and parallel processing. The Sling Data Platform provides a web-based complement with built-in editor, agent-based execution, observability/monitoring with z-score anomaly detection, Git integration, and self-hosting options. Pricing spans Free (CLI), Standard ($99/mo), Advanced ($249/mo) for Platform tiers, and $79/mo (CLI Pro) and $149/mo (CLI Pro Max) for CLI Pro tiers.

Differentiator

Problem solved

Functional benefit

Brands

• Sling CLI: Open-source command-line data integration tool, free to download and use under AGPL-3.0 license.
• Sling Data Platform
• CLI Pro
• CLI Pro Max
• Sling Platform

Products and services

• Sling CLI Free, open-source command-line tool for ELT (Extract, Load, Transform) data integration. Core engine written in Go with a streaming design for memory efficiency. Supports YAML-based replication configuration, multiple load modes (full-refresh, truncate, incremental, snapshot, backfill), and 40+ database, file system, and API connectors. Licensed under AGPL-3.0 and targeted at developers, data engineers, and analytics engineers who want to replace hand-rolled scripts.
• Sling CLI Pro Paid subscription tier that extends the open-source Sling CLI with advanced features for professional data engineers: API Sources (REST API extraction via YAML specs), parallel streams with automatic retries, stream chunking for large datasets, delete capture, staged transforms with 50+ functions, state-based incremental loading, ODBC connections, OpenTelemetry logging, and pipelines/hooks for complex workflows. Priced at $79/month (monthly) or $72/month (yearly).
• Sling CLI Pro Max Top-tier CLI subscription that includes all CLI Pro capabilities plus Change Data Capture (CDC) for continuous row-level replication from database transaction logs with automatic initial snapshots, automated schema migration (primary keys, foreign keys, indexes, defaults, constraints), and priority support. Priced at $149/month (monthly) or $137/month (yearly).
• Sling Data Platform Web-based data integration platform for developing, testing, and managing Sling jobs at team scale. Includes built-in smart editor (IDE), agent-based execution for Mac/Linux/Windows, parallel stream runs, multiple project workspaces, alerting (Email, Slack, MS Teams), Git integration (GitHub/GitLab/Bitbucket), observability/monitoring with z-score anomaly detection, Change Data Capture, schema migration, and self-hosting options for security-conscious deployments.
• Sling Platform REST API REST API at https://api.slingdata.io enabling programmatic platform management. Supports connection management (list, test), file operations (get, list, save), job management (list, get, save, run), execution handling (list, cancel, get logs), and Git sync (pull). Authentication via Bearer token using a Sling Project Token; all requests require the Authorization header and Content-Type: application/json. Targeted at developers embedding Sling Platform into CI/CD or custom workflows.

Quantifiable outcome

• Streaming architecture holds minimal data in memory for efficiency
• +3 more outcomes

Named customers6 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration48 records

AI capability2 records

Feature9 records

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Hevo Data: No-code/low-code data pipeline platform supporting CDC, real-time sync, and reverse ETL; competes with Sling Platform on managed ingestion and team workflows.
• Airbyte: Open-source ELT platform with a large connector catalog and self-hosted/cloud options, directly competing with Sling on data integration, CDC, and developer-led adoption.
• Striim: Real-time data integration and CDC platform with streaming architecture, overlapping with Sling's CDC, schema migration, and parallel-stream capabilities.
• Stitch (by Talend / Qlik): Managed ELT service focused on replicating data from SaaS sources and databases into warehouses, targeting the same data engineer persona and use cases as Sling.
• Meltano: Open-source ELT tool built on Singer, offering Singer taps/targets, dbt integration, and self-hosted deployment — a direct functional alternative to Sling CLI for developer-driven data integration.
• Rivery: Cloud ELT and data pipeline service offering pre-built connectors, reverse ETL, and CDC; targets similar data engineering and analytics use cases as Sling.

Broad incumbents

• Matillion: Enterprise ELT platform with a visual UI and broad cloud-warehouse support; competes for the same enterprise data team budget as Sling Platform Advanced.
• Fivetran: Largest managed ELT provider with 300+ connectors and a usage-based pricing model; competes with Sling on enterprise data movement and serves the same buyer personas at larger scale.
• CData Software: Provider of data connectivity and integration tooling including drivers, connectors, and replication features; overlaps with Sling's 40+ connector ecosystem and replication functionality.

Emerging players

• dlt (data load tool): Open-source Python library for data loading with a code-first approach and growing connector ecosystem; overlaps with Sling on developer-led ELT and schema evolution.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks1 record

Key highlights6 records

Customer concentration

• Xx.com/SlingDataIO
• GitHubgithub.com/slingdata-io
• LinkedInlinkedin.com/company/slingdata-io

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

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 SlingData.io