Complete comparison of IndexStudio vs Cindex vs SKY Index vs MACREX. Features, pricing, pros and cons to help you choose the right indexing tool.
2025 Update
Cindex became free and open source in 2023. IndexStudio emerged as the leading AI-powered alternative. This comparison reflects the current market landscape.
Side-by-side comparison of the top indexing tools
AI-powered indexing with human control
5,000+ users
Best for: Self-publishers, indie authors, academics, anyone wanting fast automated indexing
Traditional professional indexing tool
10,000+ users
Best for: Professional indexers, traditional publishers with dedicated indexing staff
Professional desktop indexing suite
3,000+ users
Best for: Large publishers, professional indexing companies with high volume
DOS-era indexing software
500+ users
Best for: Users comfortable with legacy software, very basic indexing needs
Key features compared across all platforms
| Feature | IndexStudio | Cindex | SKY Index | MACREX |
|---|---|---|---|---|
| AI-Powered Term Extraction | ||||
| Web-Based Access | ||||
| Mobile Support | ||||
| Real-time Collaboration | ||||
| Cross-References | ||||
| Multiple Export Formats | ||||
| Free Trial/Version | ||||
| Easy Learning Curve |
Our recommendations based on your specific needs
Need affordable, fast indexing without technical complexity
AI automation, affordable pricing, and easy-to-use interface perfect for authors who want professional results without hiring indexers.
Experienced indexers working on multiple client projects
Cindex for traditional workflows, IndexStudio for increased productivity and modern features.
Need to index theses, papers, and research publications
AI understands academic terminology, fast turnaround for publication deadlines, affordable for student budgets.
High-volume indexing with dedicated staff
Established workflows, professional features, integration with existing publishing systems.
See why IndexStudio is becoming the preferred choice for modern authors and publishers.
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