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Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.
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✕
The New GitBook
✓ verified
Widely used technical-documentation platform with AI-powered search; very high traffic.
👁 653K/mo♥ 2.9K
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OpnForm
✓ verifiedPaid
Open-source AI form builder for free forms and surveys; strong adoption and traffic.
👁 30K/mo♥ 684
✕
Google Opal
✓ verified
Google Opal builds AI mini-apps via natural language; official Google product.
👁 2.1M/mo
Pricing
No public pricing
No public pricing
Free: $0
Pro (Monthly): $16 per month
Pro (Yearly): $16 per month (billed yearly)
No public pricing
Core features
- ✦AI-powered search and insights
- ✦Git-based workflow
- ✦WYSIWYG editor
- ✦OpenAPI spec file support
- ✦SEO and AI data ingestion optimization
- ✦Adaptive content
- ✦Built-in analytics
- ✦AI-powered petition drafting
- ✦Effortless achievement collection
- ✦Tailored AI-editor for immigration petitions
- ✦One-stop document assembly and filing
- ✦Recommendation letter builder
- ✦Smart form filling
- ✦Summary of Contributions (SoC) drafting
- ✦AI Form Builder
- ✦Unlimited forms, fields, and responses (Free plan)
- ✦Form logic, URL pre-fill, Hidden fields
- ✦File uploads, Custom code, Webhooks
- ✦Customizable themes and thank you pages
- ✦Form Analytics
- ✦No-Code AI Mini-App Creation
- ✦Natural Language Building and Editing
- ✦Rapid Prototyping
- ✦Intuitive Visual Editor (Node-based workflow)
- ✦Instant Hosting and Sharing of Apps
- ✦Multi-step AI Workflow Creation
- ✦Gallery of Demo Opals for Remixing
- ✦Debugging with Console
- ✦Automatic Version History
Use cases
- →Build product documentation your users will love
- →Create interactive API docs
- →Localize your docs with AI
- →Centralize product docs, API reference, help center, and changelog
- →Drafting NIW, EB1, H1B, and O1 petitions
- →Organizing and indexing exhibits for petitions
- →Mining evidence to strengthen petitions
- →Preparing ready-to-file petition packages
- →Drafting a Summary of Contributions (SoC)
- →Streamlining the green card application process
- →Creating contact forms
- →Conducting surveys
- →Collecting internal announcements
- →Managing warehouse inventory check-ins
- →Gathering training feedback
- →Processing international job applications
- →Streamlining legal petitions
- →Supporting environmental initiatives
- →Generate full blog posts from a topic input.
- →Create Google Doodles that look up historical events and generate logos.
- →Develop apps that solve math problems from screenshots, provide explanations, and solutions.
- →Generate DJ tracks based on mood or preferences, including intros and YouTube links.
- →Build apps to find and present historical events related to a user's birthday.
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