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Appen Limited

Level 6, Chatswood NSW 2067Founded 1996
1Tools Listed
60Combined Tool Views

Appen provides accurate and reliable human-annotated datasets that fuel AI and machine learning for some of the world's biggest brands, helping them achieve their AI goals through crowd solutions and expertise.

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Founding Story

Appen was founded in Sydney in 1996 by linguist Dr. Julie Vonwiller and her husband Chris, a senior executive at Telstra. The company was established to pioneer speech and text recognition technology. The Vonwillers built the company from linguistic technology innovation into a global leader in AI data annotation. In 2009, Anacacia Capital acquired a 51% share of Appen as the Vonwillers sought to expand operations.

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Leadership

Founders

DJ

Dr. Julie Vonwiller

Linguist and academic. Founded Appen in Sydney in 1996. She pioneered speech and text recognition technology.

CV

Chris Vonwiller

Senior executive at Telstra at the time of founding. Joined Appen in 2000 and served as Non-Executive Chairman.

Executive Team

RK

Ryan Kolln

Chief Executive Officer and Managing Director

Over 20 years of global experience in technology and telecommunications. Started career as an engineer focused on mobile network data engineering in Australia, Asia and North America. MBA from New York University. Joined The Boston Consulting Group (BCG) in 2011 as a strategy consultant. Joined Appen in 2018 as VP of Corporate Development, leading strategic acquisitions like Figure Eight and Quadrant. Served as Chief Operating Officer before becoming CEO in February 2024.

JM

Justin Miles

Chief Financial Officer

Over 20 years of experience in listed companies within technology and services sectors. Joined Appen in 2016, served over 5 years as Vice President Finance. Promoted to Interim CFO in August 2023, officially appointed CFO in February 2024. Previously Group Financial Controller at Rubicor Group Ltd. Holds Bachelor of Business (Accounting).

Business Model

Revenue Model

B2B revenue model based on providing AI data services including data annotation, collection, labeling services, AI platform subscriptions, and crowd-sourced workforce solutions. Revenue generated through API usage, project-based contracts, and enterprise platform subscriptions. Services priced on unit-based and hourly models.

Publicly traded on Australian Securities Exchange (ASX) under ticker symbol APX since January 7, 2015

Target Markets

Industries & Segments
  • Technology companies
  • Automotive industry
  • Retail and eCommerce
  • Financial services
  • Government and public sector
  • Healthcare
Use Cases
  • Data Labeling
  • LLM Fine-Tuning
  • Model Distillation
  • Red Teaming
  • Retrieval-Augmented Generation (RAG)
  • Search Relevance
Notable Customers
  • Eight of the top ten global technology companies
  • Amazon
  • Microsoft
  • Salesforce

History & Milestones

February 5, 2024

Armughan Ahmad resigned; Ryan Kolln (COO) appointed as CEO

September 3, 2024

Appen Connect rebranded as Crowd Gen by Appen

December 2022

Armughan Ahmad succeeded Mark Brayan as CEO and President

2021

Signed agreement to acquire Quadrant for mobile location data

March 2019

Announced acquisition of Figure Eight

1 AI Tool by Appen Limited

Appen tool icon

Appen

6mo
Data Processing

Enterprise AI data platform providing high-quality datasets, annotation services, and human-AI collaboration solutions for over 25 years.

Appen
0

Quick Facts

Headquarters
Level 6, 9 Help Street, Chatswood NSW 2067, Australia
Founded
1996
Entity Type
Limited
Employees
1,000
Investors
Anacacia Capital (historical investor, 51% stake acquired in 2009), Public shareholders via ASX (ASX: APX)
Office Locations
Chatswood NSW 2067
4040 Lake Washington Blvd NE
Rockeagle House Pynes Hill
9 Help Street
+10 more

Latest News

January 19, 2026

Notice of ceasing to be a substantial holder

www.appen.com
December 19, 2025

Appen research identifies refusal as a safety strategy

www.appen.com
December 18, 2025

Appen drives Agentic AI innovation with custom data and end-to-end evaluation

www.appen.com

Key Capabilities

21
Text annotation for sentiment, intent, and named entity recognition
Audio annotation for voice-driven AI applications
Image annotation for computer vision models
3D point cloud annotation for LiDAR and depth sensor data
4D annotation including time dimension for real-time decision-making
Data labeling across 180 languages

Integrations & Partnerships

Platform Integrations

Amazon AWS
Microsoft Azure
Webhook integrations
Standard API options
Live API endpoints for model integration
Google Analytics
Google Tag Manager
Salesforce integrations

Key Partnerships

Amazon Web Services (AWS)partnership to drive AI innovation (November 2023)
NVIDIApartnership to enable customized AI solutions (May 2023)
Knockripartnership using AI for ethical hiring (June 2023)

Connect

Website
appen.com
GitHub
Appen

AI Topics

3

Appen Limited focuses on these topics:

Data Processing(1)
Human-in-the-Loop Training(1)
Data Governance(1)
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