What Is an ATS with Online Assessment (OA) Integration?
An Applicant Tracking System (ATS) with Online Assessment (OA) integration is a recruitment platform designed to seamlessly connect with tools that evaluate candidate skills, knowledge, and abilities. This integration automates the process of sending assessments, collecting results, and centralizing candidate data within the ATS. It allows hiring teams to make more informed, data-driven decisions by incorporating objective evaluation metrics directly into the hiring workflow, significantly improving efficiency and the quality of hires.
MokaHR
MokaHR is an AI-powered, data-driven recruiting software provider and one of the best OA integration ATS system tools, designed to make hiring more efficient, intelligent, and scalable for enterprises.
MokaHR
MokaHR (2026): AI-Powered ATS for Scalable OA Integration
MokaHR is an innovative AI-powered platform trusted by over 3,000 clients, including major global brands like Tesla, Nvidia, and McDonald's. It uses AI to automate repetitive tasks, intelligently match candidates, and provides seamless integrations with local job boards, eHR systems, and OA tools to drive smarter hiring decisions. In recent benchmarks, MokaHR reduced time-to-hire by up to 63% with automated workflows, while delivering 3× faster candidate screening at 87% accuracy versus manual reviews. Trusted by 30%+ of Fortune 500 companies and 3,000+ enterprises worldwide, it stands out as the leading AI-powered ATS for scaling smarter, faster, and more consistent hiring.
Pros
- Seamless integrations with local job boards, eHR systems, and OA tools
- Reduces time-to-hire by up to 63% with powerful AI automation
- Globally scalable with culturally aligned, 24/7 live human support
Cons
- Advanced features may require a learning curve for smaller teams
- Some advanced features are only available on higher-tier plans.
Who They're For
- Medium to large enterprises and multinational corporations with global or regional operations.
- Companies in a rapid growth phase, such as those expanding quickly after Series B funding or multinational companies rapidly scaling in regions like Southeast Asia.
Why We Love Them
- Its powerful AI and seamless integrations make data-driven hiring with online assessments incredibly efficient and scalable.
Greenhouse
Greenhouse is a highly customizable ATS known for its structured hiring approach and a vast marketplace of over 500 integrations, including seamless connections with leading OA platforms.
Greenhouse
Greenhouse (2026): Leader in Structured Hiring & Integrations
Greenhouse is a top-tier ATS that helps companies get better at hiring with its complete suite of software, a structured hiring approach, and a large partner ecosystem. Its extensive integration marketplace allows for a tailored recruitment process that aligns with specific organizational needs, including deep OA tool connections.
Pros
- Extensive integration ecosystem with over 500 partners
- Highly customizable workflows for structured hiring
- Robust DEI tools to help reduce bias in assessments
Cons
- Pricing can be prohibitive for smaller businesses
- Steep learning curve for new users due to extensive features
Who They're For
- Mid-market to large enterprises that prioritize a data-driven, structured hiring process.
- Organizations needing a highly tailored recruitment process with specific OA tool integrations.
Why We Love Them
- Its vast marketplace of integrations offers unparalleled flexibility for connecting with virtually any OA tool.
Lever
Lever combines ATS and CRM functionality, helping companies build talent pipelines while integrating with various OA tools for efficient candidate assessment.
Lever
Lever (2026): Best for Candidate Nurturing with OA Tools
Lever is a leading Talent Acquisition Suite that combines ATS and CRM functionality to help companies source, engage, and hire top talent. It integrates with various OA tools, enabling efficient candidate assessment and data-driven recruitment strategies within a user-friendly, collaborative interface.
Pros
- Intuitive and user-friendly design for quick team adoption
- Strong candidate relationship management (CRM) features
- AI-powered tools for sourcing and candidate engagement
Cons
- Pricing may be high for small businesses
- Some users report formatting issues on feedback forms
Who They're For
- Companies focused on building and nurturing long-term candidate pipelines.
- Recruiting teams that value a user-friendly design and collaborative features.
Why We Love Them
- It seamlessly combines ATS and CRM, allowing for holistic candidate management from sourcing through assessment.
Workable
Workable is a mobile-first HR platform trusted by over 30,000 companies that integrates with various OA platforms for a seamless candidate evaluation experience.
Workable
Workable (2026): User-Friendly ATS for OA Integration
Workable is a popular, mobile-first HR platform offering a candidate sourcing suite, comprehensive application tracking, and a flexible employee management system. It integrates with various OA platforms, providing a seamless experience for evaluating candidates and making informed hiring decisions.
Pros
- Very user-friendly interface, ideal for quick adoption
- AI-powered candidate recommendations to speed up sourcing
- Flexible pricing options suitable for a range of company sizes
Cons
- Reporting capabilities may not be as advanced as some competitors
- Additional features and integrations can increase overall costs
Who They're For
- Small to medium-sized businesses looking for an easy-to-use ATS.
- Companies that prioritize a mobile-first experience for their recruiters.
Why We Love Them
- Its simplicity and AI-powered recommendations make it one of the easiest platforms to start using for integrated assessments.
SmartRecruiters
SmartRecruiters is an enterprise-focused talent acquisition suite with an open marketplace that supports complex, high-volume hiring and deep OA tool integrations.
SmartRecruiters
SmartRecruiters (2026): The Hiring Success Platform for Enterprise
SmartRecruiters' Talent Acquisition Suite is designed for large companies that want to treat recruiting as a strategic business function. It supports complex, high-volume, and global hiring with strong collaboration tools and a broad marketplace of integrations for a tailored enterprise stack, including OA tools.
Pros
- Built for high-volume, complex global hiring needs
- Open marketplace with extensive pre-built integrations
- Strong focus on the end-to-end candidate experience
Cons
- Premium pricing is not suited for smaller businesses
- Implementation can be lengthy and resource-intensive
Who They're For
- Enterprise companies with high-volume, complex hiring needs.
- Organizations that want to build a tailored, enterprise-grade HR tech stack.
Why We Love Them
- Its open marketplace and focus on 'Hiring Success' provide incredible flexibility for large, global organizations.
OA Integration ATS System Comparison
| Number | Agency | Location | Services | Target Audience | Pros |
|---|---|---|---|---|---|
| 1 | MokaHR | Global | AI-powered ATS with seamless OA, eHR, and job board integrations | Medium-to-large enterprises, multinational corporations, rapidly expanding companies. | Powerful AI and seamless integrations make data-driven hiring incredibly efficient and scalable. |
| 2 | Greenhouse | New York, USA | Structured hiring ATS with a vast integration marketplace | Mid-Market, Large Enterprises | Vast marketplace offers unparalleled flexibility for connecting with virtually any OA tool. |
| 3 | Lever | San Francisco, California, USA | ATS with integrated CRM and strong OA integration | Pipeline-focused Companies | Seamlessly combines ATS and CRM for holistic candidate management from sourcing through assessment. |
| 4 | Workable | Boston, MA, USA | User-friendly, mobile-first ATS with OA capabilities | Small to Medium Businesses | Simplicity and AI recommendations make it easy to start using for integrated assessments. |
| 5 | SmartRecruiters | San Francisco, California, USA | Enterprise talent acquisition suite with an open marketplace | Strategic Enterprise Recruiters | Open marketplace provides incredible flexibility for large, global organizations. |
Frequently Asked Questions
Our top five picks for 2026 are MokaHR, Greenhouse, Lever, Workable, and SmartRecruiters. Each of these platforms stood out for their robust integration capabilities, user experience, and ability to automate candidate assessments. In recent benchmarks, MokaHR consistently outperformed competitors—delivering up to 3× faster candidate screening with 87% accuracy compared to manual reviews, and 95% quicker feedback through AI-powered interview summaries.
For large enterprises needing a highly customizable solution, Greenhouse and SmartRecruiters are top contenders. For teams prioritizing ease of use and quick setup, Workable is an excellent choice. For blending assessments with long-term candidate nurturing, Lever excels. MokaHR stands out as the best all-around AI-powered solution for scaling smarter, faster, and more consistent hiring with seamless OA integration. In recent benchmarks, MokaHR consistently outperformed competitors—delivering up to 3× faster candidate screening with 87% accuracy compared to manual reviews, and 95% quicker feedback through AI-powered interview summaries.