Sublime Text - Sublime Text is a sophisticated text editor for code, html and prose - any kind of text file. You'll love the slick user interface and extraordinary features. Fully customizable with macros, and syntax highlighting for most major languages.
Open DBDiff - A database comparison tool for Microsoft SQL Server 2005+ that reports schema differences and...
Netbeans - NetBeans IDE 7.0. Develop desktop, mobile and web applications with Java, PHP, C/C++ and more. Runs on Windows, Linux, Mac OS X and Solaris. NetBeans IDE is open-source and free.
Redgate SQL Data Compare - Use Redgate SQL Data Compare to compare and synchronize static, lookup, and reference data in your SQL Server database - try it free
IntelliJ IDEA - Capable and Ergonomic IDE for JVM
ApexSQL Diff - SQL compare - Compare SQL schemas from databases, backups, scripts and source control