NebulaFrameworkA development framework for Salesforce's Apex language & the Force.com platform
sfdc-generate-data-dictionaryGenerate data dictionary from a Salesforce Org. This tool can also generate a file that can be imported in Lucidchart to define entities and relationships.
apexmockforce.com Mock data and fixtures for Apex Unit Tests
apex-dml-mockingDML mocking, CRUD mocking, dependency injection framework for Salesforce.com (SFDC) using Apex