Highlights:

• Open Source! GPLv3, no hidden costs.
• Cross-platform. Runs on Linux, Mac, Windows (uses wxWidgets).
• Written in C++. No interpreted languages or proprietary libs needed.
• Extensible through plugins

Compiler:

• Multiple compiler support:
  
  • GCC (MingW / GNU GCC)
  • MSVC++
  • Digital Mars
  • Borland C++ 5.5
  • Open Watcom
  • ...and more
• Very fast custom build system (no makefiles needed)
• Support for parallel builds (utilizing your CPU's extra cores)
• Multi-target projects
• Workspaces to combine multiple projects
• Inter-project dependencies inside workspace
• Imports MSVC projects and workspaces (NOTE: assembly code not supported yet)
• Imports Dev-C++ projects

Debugger:

• Interfaces GNU GDB
• Also supports MS CDB (not fully featured)
• Full breakpoints support:
  • Code breakpoints
  • Data breakpoints (read, write and read/write)
  • Breakpoint conditions (break only when an expression is true)
  • Breakpoint ignore counts (break only after certain number of hits)
• Display local function symbols and arguments
• User-defined watches (support for watching user-defined types through scripting)
• Call stack
• Disassembly
• Custom memory dump
• Switch between threads
• View CPU registers

Interface:

• Syntax highlighting, customizable and extensible
• Code folding for C++ and XML files.
• Tabbed interface
• Code completion
• Class Browser
• Smart indent
• One-key swap between .h and .c/.cpp files
• Open files list for quick switching between files (optional)
• External customizable "Tools"
• To-do list management with different users