DCamCapture has been discontinued. Similar apps include digiCamControl, which is free and open source. Other options are CaptureGRID, EOS Camera Movie Record, Remote DSLR Control and ControlMyNikon. In total there are eight apps like DCamCapture for Windows, Mac and Linux.
A DSLR camera remote control open source software Features:
Hungary
EU
Smart Shooter allows you to fully control your camera from your PC, giving you freedom to explore and experiment to help take the perfect picture.
United States
This software writes short movies with your digital DSLR camera Canon (R) directly to computer. The camera must have LiveView feature to work, like in Canon EOS 450D for example. The Program has preview, Av, Tv and WB control.
Control your Nikon DSLR camera remotely from a computer.
RemoteDSLRcontrol supports tethered shooting of most modern Nikon DSLR's. Trigger image captures, see the liveview on your computer screen, change camera settings and start different tasks such as HDR bracketing or Ti.
ControlMyNikon is the THE BEST tethering software for Nikon DSLR's! It has a CRAZY amount of features for an equally CRAZY low price. If you are into portrait, macro, product, landscape, timelapse or HDR photography, ControlMyNikon has you covered.
NKRemote... The professional's software solution for remotely controlling your Nikon D7000, Nikon D90, Nikon D5100, Nikon D5000, Nikon D300, Nikon D300s, Nikon D700, Nikon D3X, Nikon D3s, Nikon D3, Nikon D200 or Nikon D80 digital SLR from a Windows PC using a USB cable.
United Kingdom
Nikon non-SDK html application (browser-based but runs locally) with remote trigger, sync, view/set exposure, filename prefix, timelapse, file format setting
Hong Kong SAR China
This is an open source program for controlling digital cameras, especially those that support PTP. The initial focus is on native Mac support, but long term thinking is to support Linux/gphoto2 as well.
Canada
