Table 1-.

Comparison of Schema.org, Bioschemas, and DDE Schema Playground

	schema.org	Bioschemas	DDE schema playground
Search for classes from own community	✓	✓	✓
Search for classes from other communities			✓
Visualize any schema in json			✓
Compare schemas			✓
Create a schema	✓*	✓*	✓
Extend a schema			✓
Create schema validation			✓
Export/Save a schema			✓
View example markup using a schema	✓	✓
Create markup using a schema			✓**
Account for cardinality		✓	✓
Account for marginality		✓	✓
Google doc integration
github integration	✓	✓	✓
markup validation
markup scraper			✓**

✓ available, separate tools available,

^*process in place,

^**feature exists, but not generally available