Computer

• SniperSpy (full review here) – Best remote spy software. Can be installed remotely and data accessed online without physical access to computer.
• KeyProwler – Best inhome computer spy software (must have physical access to the computer to check logs and install)

Phone

Android and iPhone Apps

-Full article: Top 3 Apps for Spying on Text Messages and Call History

Winner: MobiStealth

Phone data extraction (computer software)

Cell Phone Recon
(for android, blackberry, and windows phones)

iPhone Spy Stick
(for iPhone, must be jailbroken)

Cameras

Software

uGoLog – Browser-based, requires no software or networking skills to setup. Automatically records video history. Has motion detection and interval-based recorder. Supports multiple cameras.
WebCam Monitor – Popular desktop monitoring software. User interface is complex and could be intimidating for beginner. Supports Webcams and IP Cameras, controls Pan/Tilt/Zoom cameras, has motion detection and scheduler. Can run custom scripts.

Hardware

Clothes Hook Video Recorder

iShot Hidden Clock Cam

Hacking Services

NONE. $100 hacking services are complete scams. Often these websites have horrible English and typos and often include a sample video of hacking software doing the job in minutes. These are lies to steal your money – AVOID THEM.