A list of available IDEs to create classes, triggers, Visualforce/Lightning pages/components.

• Force.com IDE – plugin for Eclipse
• JedIDE – plugin for IntelliJ IDEA & standalone Force.com IDE
• MavensMate – plugin for Sublime Text and Atom and VS Code
• FuseIT SFDC Explorer - This is a standalone tool
• Welkin Suite – This is a standalone tool;
• Illuminated Cloud - plugin for IntelliJ IDE
• Aside.io - Web-based IDE
• Cloud 9 - Web-based IDE
• VimAwesome - VIM plugin for Force.com
• HaoIDE - Sublime Text plugin for Force.com
• Metaforce - A lightweight Chrome app for Salesforce develoment

• Salesforce Navigator (Google Chrome)
• Force.com Logins (Google Chrome, Firefox)
• Salesforce Developer Tool Suite (Google Chrome)
• Salesforce Lighting Components Inspector (Google Chrome)
• Salesforce Developer Tool Suite (Google Chrome)
• Salesforce Schema Builder Expander (Google Chrome)
• Boostr for Salesforce (Google Chrome)
• Salesforce API Fieldnames (GoogleChrome)
• Changeset Helper (Google Chrome)
• Salesforce Inspector (Google Chrome, Firefox)
• Salesforce Mass Editor (Google Chrome)
• Space (Google Chrome)

• Official Apex Debugger

  • Realtime debugging
  • Force.com IDE
  • requires special licensing from salesforce

• Welkin Suit

  • Log replay debugging
  • Stand alone IDE
  • Subscription required

• Illuminated Cloud:

  • Log replay debugging
  • JetBrains Extension
  • Subscription required

• Salesforce Apex Debug

  • Log replay debugging
  • VS Code Extension
  • Free and open source
  • Currently still in alpha

• Salesforce DataLoader
• Dataloader.io
• Jitterbit
• SFXOrgData
• DreamFactory Monarch
• Pentaho Kettle
• Talend

• CodeClimate: Cloud Service
• CodeScan: Cloud Service
• Clayton.io: Cloud Service
• VSCode Apex PMD: VS Code extension for realtime static analysis as you code
• Apex PMD: command line core that runs most the above tools