Spring Tool Suite 3.9.14
• https://download.springsource.com/release/STS/3.9.14.RELEASE/dist/e4.17/spring-tool-suite-3.9.14.RELEASE-e4.17.0-win32-x86_64.zip
→ 7zip으로 압축 푸는 것 권장
tern 설치
JavaScript Development Tools (editor) 설치
https://download.eclipse.org/releases/2020-03