This file lists the major user visible improvements. For a full list of changes and their authors see the git history.

Version 4.0

Support tracing in Android, both native and Dalvik applications.
Show frame thumbnails in the GUI.
Basic D3D 10.1, 11, and 11.1 trace support.
Multi-threaded trace/retrace support.
Several OpenGL ES state dump fixes.
GPU profiling.
Thumbnails in GUI
Trim improvements.
Loads of bugfixes

Version 3.0

Top-level apitrace command.
Trace and replay support for EGL, GLES1, and GLES2 APIs on Linux.
Ability to trim traces.
Basic CPU profiling when retracing.
Basic D3D10 trace support.
Many bugfixes.

Version 2.0

Flush/sync trace file only when there is an uncaught signal/exception, yielding a 5x speed up while tracing.
Employ snappy compression library instead of zlib, yielding a 2x speed up while tracing.
Implement and advertise GL_GREMEDY_string_marker and GL_GREMEDY_frame_terminator extensions.
Mac OS X support.
Support up-to OpenGL 4.2 calls.
Better GUI performance with very large traces, by loading frames from disk on demand.

Version 1.0

Qt GUI, capable of visualizing the calls, the state, and editing the state.

Pre-history

OpenGL replay support.